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How to Measure Heart Rate on Samsung Health S24 Your Guide

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March 15, 2026

How to Measure Heart Rate on Samsung Health S24 Your Guide

How to measure heart rate on Samsung Health S24? This is your ultimate guide, fam! Get ready to unlock the secrets of your heart’s rhythm, straight from your Samsung S24. We’ll break down the whole process, from initial setup to advanced features, in a way that’s easy to understand and totally vibe-worthy. Level up your fitness game and get a clearer picture of your health, all with your S24.

The Samsung Health app on your S24 packs a powerful heart rate tracker. This feature allows you to monitor your heart rate effortlessly, whether you’re chilling or crushing a workout. Different methods are available for measuring your heart rate, and we’ll dive deep into each one. Plus, we’ll show you how to interpret the results and troubleshoot any issues you might encounter along the way.

Let’s get this workout started!

Introduction to Samsung Health S24 Heart Rate Measurement

The Samsung Health S24 utilizes advanced optical sensor technology to track heart rate, providing users with valuable insights into their cardiovascular health. This comprehensive approach incorporates various measurement methods, ensuring accuracy and reliability across different usage scenarios. The device continuously monitors heart rate, allowing for real-time data collection and analysis, which can be used for personalized fitness tracking and health management.The S24’s heart rate tracking capabilities go beyond basic readings, offering detailed data points for a more nuanced understanding of the user’s heart health.

This detailed information is crucial for both fitness enthusiasts and individuals concerned about their overall well-being. The device’s algorithms adapt to individual characteristics and activity levels, ensuring accurate and consistent readings.

Methods of Heart Rate Measurement

The Samsung Health S24 employs a combination of optical sensor technologies to measure heart rate. This multifaceted approach leverages different light wavelengths and analysis techniques to achieve reliable results. These methods, while employing similar principles, differ in their specific applications and strengths.

Optical Heart Rate Sensor Technology

The primary method for heart rate measurement in the Samsung Health S24 relies on optical sensors. These sensors, typically located on the wrist, emit light and detect the changes in reflected light caused by blood flow variations in the capillaries beneath the skin. The changes in light intensity are then processed by sophisticated algorithms to calculate the heart rate.

This technology is widely used due to its non-invasive nature and convenience.

Analysis Algorithms

The algorithms employed by the Samsung Health S24 play a crucial role in the accuracy and reliability of heart rate measurements. These algorithms analyze the collected light data, identifying patterns indicative of heartbeats. Sophisticated signal processing techniques are used to filter out noise and artifacts, ensuring a clean and accurate heart rate reading. This filtering is essential to eliminate inaccurate readings that may result from external factors like motion or ambient light variations.

Robust algorithms are critical for the accuracy of the measurement.

Different Measurement Methods and Their Applications

  • Photoplethysmography (PPG): This method is the core of the S24’s heart rate tracking. PPG uses light absorption to detect blood volume changes associated with heartbeats. The sensor measures the variations in light absorption, which correlate to the heart’s rhythm. This method is highly accurate when the user’s wrist is stable and the sensor is properly positioned.
  • Accelerometer Data Integration: The S24 integrates accelerometer data to further enhance the accuracy of heart rate measurements. This sensor detects motion and helps to differentiate between heart rate fluctuations caused by movement and those associated with the heart’s natural rhythm. This integration is crucial for accurate readings during activities like exercise or strenuous workouts.
  • Ambient Light Compensation: The S24 incorporates algorithms to mitigate the effect of ambient light on the accuracy of measurements. These algorithms effectively filter out external light sources to ensure that the readings are not affected by fluctuations in the surrounding environment. This compensation is important for consistent and reliable readings in various settings.

Accuracy and Usage Scenarios

Method Accuracy Typical Usage Scenarios
Photoplethysmography (PPG) High (typically within ±2 bpm for stable readings) General heart rate monitoring, resting heart rate tracking, daily activity tracking.
Accelerometer Data Integration High (improves accuracy during exercise) Exercise tracking, active lifestyle monitoring, identifying heart rate variability during different activities.
Ambient Light Compensation High (reduces errors due to external light) Measurements in various lighting conditions, ensuring consistent readings in different environments, such as indoor or outdoor settings.

The accuracy of heart rate measurement depends on various factors, including the user’s body position, the ambient light conditions, and the level of activity.

Setting up Heart Rate Tracking: How To Measure Heart Rate On Samsung Health S24

Initial setup of heart rate tracking on the Samsung Health app for the S24 involves several key steps and requires specific permissions to ensure accurate and reliable data collection. Proper configuration enables seamless integration with the device’s sensors and allows for comprehensive heart rate monitoring throughout the day. This process is crucial for leveraging the full functionality of the heart rate tracking features.

Initial Setup and Configuration Steps

The process of configuring heart rate tracking within the Samsung Health app on the S24 involves a series of straightforward steps. This setup ensures accurate data collection and enables the user to take full advantage of the device’s heart rate monitoring capabilities. Following these steps guarantees the seamless integration of the heart rate sensor with the app.

  1. Open the Samsung Health app on your S24. The app provides a comprehensive platform for monitoring various health metrics, including heart rate.
  2. Navigate to the “Heart Rate” section within the app. This section houses features and settings related to heart rate tracking, providing an easy-to-access interface for managing these settings.
  3. Enable heart rate monitoring. This typically involves toggling a switch or selecting an option within the Heart Rate section to activate the heart rate sensor. The app will guide the user through the process.
  4. Authorize necessary permissions. The app will request access to certain functionalities on your device to enable accurate heart rate tracking. These permissions are essential for the app to function correctly and provide real-time heart rate data.
  5. Configure preferences. This step allows customization of heart rate tracking. Users can adjust the frequency of readings, the notification settings, and other preferences based on their individual needs and preferences.
  6. Calibrate the sensor (if applicable). Some devices may require a calibration process to ensure accurate readings. The app will provide instructions for this step, if needed.

Required Permissions and Settings

Specific permissions are necessary for the Samsung Health app on the S24 to access and utilize the device’s heart rate sensor. These permissions are crucial for ensuring accurate and reliable heart rate data collection.

  • Location Services: While not directly related to heart rate, location data may be used in conjunction with activity tracking. This permission is optional and allows for integration with fitness tracking features that incorporate location data.
  • Motion and Orientation Sensors: This permission is necessary for the device’s sensors to accurately capture motion data, which might be correlated with heart rate variability during exercise.
  • Storage: The permission to access storage is required for saving data logs and recordings, ensuring accurate data tracking and future reference.
  • Notifications: Notification access is needed to receive timely alerts and updates about heart rate readings, enabling prompt responses to potential issues or changes in heart rate.

Enabling and Configuring Heart Rate Monitoring

The Samsung Health app on the S24 allows for comprehensive configuration of heart rate monitoring. This customized setup enables users to tailor the app to their specific needs and preferences. This flexibility is essential for maximizing the benefits of heart rate tracking.

Step Action Description
1 Open the Samsung Health app. Launch the application on the S24 device.
2 Navigate to Heart Rate settings. Locate and select the Heart Rate section within the app.
3 Enable Heart Rate Monitoring. Turn on the heart rate monitoring feature.
4 Adjust Preferences. Configure frequency, notifications, and other options.

Understanding the Results

Interpreting heart rate data from the Samsung Health S24 app is crucial for understanding your cardiovascular health. Proper interpretation allows for early detection of potential issues and informed adjustments to lifestyle choices. This section details various methods for analyzing heart rate data, including recognizing normal and abnormal heart rates, identifying trends, and understanding the significance of different heart rate zones.Accurate interpretation of heart rate data is essential for proactive health management.

Understanding normal and abnormal ranges, recognizing patterns, and understanding the meaning of heart rate zones allows users to tailor their activity and rest schedules to optimize their cardiovascular well-being.

Normal and Abnormal Heart Rates

Heart rate variability is a critical factor in assessing cardiovascular health. Normal resting heart rates vary considerably based on age, fitness level, and individual factors. The Samsung Health S24 app will display your resting heart rate, which should be reviewed in conjunction with other factors. Abnormal heart rates, such as consistently elevated or suppressed rates, may indicate underlying conditions.

Regular monitoring and consultation with a healthcare professional are essential for evaluating unusual patterns. Consult a doctor if you have any concerns.

Identifying Trends and Patterns

Monitoring heart rate data over time allows for the identification of trends and patterns. For example, a consistently elevated heart rate during exercise might indicate a need for adjustments in intensity or duration. Conversely, a gradual decrease in resting heart rate over several weeks could suggest improved cardiovascular fitness. The Samsung Health S24 app provides tools for visualizing these trends, enabling users to track progress and make informed decisions.

Significance of Heart Rate Zones

Heart rate zones categorize heart rate based on intensity levels during exercise. Understanding these zones helps tailor exercise intensity to specific goals, such as improving cardiovascular fitness, burning calories, or building muscle. Different zones correspond to various physiological responses and metabolic demands. The app’s heart rate zones help provide insights into the intensity of your workout.

Heart Rate Zones and Their Meanings

Heart Rate Zone Intensity Level Typical Activities Primary Benefits
Resting Heart Rate Lowest intensity Sleeping, relaxing Provides a baseline for comparison
Light Activity Low intensity Walking slowly, light household chores Low-impact exercise, calorie burn, improving circulation
Moderate Activity Moderate intensity Brisk walking, cycling at a moderate pace, swimming Improved cardiovascular health, calorie burning, stress reduction
Vigorous Activity High intensity Running, high-intensity interval training (HIIT), playing sports Maximum calorie burn, significant cardiovascular improvement, muscle building
Maximum Heart Rate Highest intensity Short bursts of maximal effort Indicates the upper limit of your heart’s capacity

Understanding these zones allows for effective exercise planning and goal achievement. By aligning activity with the appropriate heart rate zone, individuals can maximize the benefits of their workouts and improve their overall well-being.

Troubleshooting Common Issues

How to Measure Heart Rate on Samsung Health S24 Your Guide

Accurate heart rate tracking is crucial for a comprehensive health assessment. However, various factors can sometimes lead to inaccurate readings from the Samsung Health S24. Understanding these potential issues and their solutions is essential for reliable data interpretation and effective health monitoring. This section delves into common problems, their root causes, and practical troubleshooting steps.

Potential Causes of Inaccurate Readings

Several factors can contribute to inaccurate heart rate readings. These include external factors, such as environmental conditions and user positioning, as well as internal factors, such as underlying health conditions or the user’s physiological state. The accuracy of the sensor and the software algorithm also play a role. Furthermore, improper setup or user interaction can impact the reliability of the data.

Environmental Factors Affecting Readings

Environmental conditions can significantly influence heart rate measurements. Exposure to extreme temperatures, either hot or cold, can affect blood flow and potentially lead to inaccurate readings. Similarly, strong ambient light, such as direct sunlight, can interfere with the sensor’s operation. Furthermore, metallic objects or obstructions near the sensor can disrupt the signal, leading to unreliable measurements. Proper positioning of the device and minimizing environmental disturbances are crucial for accurate results.

User Positioning and Device Placement

The placement of the Samsung Health S24 and the user’s posture during measurement are critical factors. The sensor needs unobstructed skin contact for optimal performance. Loose clothing, excessive body hair, or presence of lotions or creams on the skin can interfere with the signal. Furthermore, holding the device too tightly or pressing too hard can disrupt the readings.

Positioning the device correctly, ensuring good skin contact, and avoiding unnecessary pressure on the sensor is vital.

Device-Related Issues

Device malfunction or software glitches can also impact heart rate accuracy. A faulty sensor or a corrupted application can result in inconsistent readings. Furthermore, insufficient battery power can negatively impact the device’s performance and accuracy. Keeping the device adequately charged and ensuring its proper functioning is necessary.

User-Related Issues

Certain user-related factors can influence the accuracy of the readings. For example, stress, anxiety, or vigorous activity can cause fluctuations in heart rate, making readings less reliable. Similarly, certain underlying medical conditions may impact heart rate readings. It is important to note that in these situations, heart rate readings may not be indicative of the user’s overall health.

User awareness of these factors can help in interpreting the results correctly.

Troubleshooting Table

Common Issue Potential Cause Suggested Fix
Inconsistent readings Poor skin contact, loose clothing, or interference from external objects Ensure proper placement, remove obstructions, and try again in a different environment.
Erratic spikes in heart rate Stress, anxiety, or vigorous activity immediately preceding measurement Allow time for the user’s heart rate to return to a baseline before taking the measurement.
Inability to detect heart rate Faulty sensor, software glitches, or insufficient battery power Check the device’s battery level, restart the application, or contact customer support if the issue persists.
Low accuracy during exercise Strong ambient light, improper positioning, or excessive body hair Find a well-lit, but not brightly lit area, ensure the sensor is positioned correctly on the wrist, and avoid excessive hair growth on the wrist.

Advanced Heart Rate Tracking Features

The Samsung Health S24 offers a range of advanced heart rate tracking features beyond basic measurements. These features provide deeper insights into cardiovascular health, enabling users to monitor their heart’s response to various activities and rest periods. This detailed analysis allows for personalized understanding and proactive management of heart health.The S24’s advanced features go beyond simply measuring heart rate; they analyze trends and patterns, providing a more comprehensive view of heart function.

This allows users to gain a better understanding of their individual heart health and make informed decisions about their well-being.

Continuous Heart Rate Monitoring

Continuous heart rate monitoring tracks heart rate fluctuations throughout the day, offering a comprehensive view of cardiovascular activity. This feature provides a continuous stream of data, allowing users to observe subtle changes in heart rate associated with physical activity, stress, or other factors. The S24’s algorithm processes this data to provide real-time updates and alerts, enabling users to recognize and address potential issues promptly.

Resting Heart Rate Analysis

The S24 analyzes resting heart rate over time to provide insights into overall cardiovascular health. A lower resting heart rate generally indicates a healthier heart. The device tracks resting heart rate throughout the day, calculating averages and trends. This feature can help users identify patterns and potential issues, such as elevated resting heart rates that might signal stress or underlying health conditions.

Users can track trends to see how their resting heart rate changes over time and adjust lifestyle accordingly.

Heart Rate Monitoring During Exercise

The S24’s heart rate monitoring during exercise provides detailed data about heart rate response to various intensities and types of physical activity. This data helps users understand their target heart rate zones, enabling them to tailor their workouts for optimal results. The device can accurately track heart rate during different exercise types, from high-intensity interval training (HIIT) to sustained cardio.

By monitoring heart rate during exercise, users can identify their exertion level and make adjustments to ensure they are working out within their optimal range.

Heart Rate Variability (HRV) Analysis

Heart rate variability (HRV) is a measure of the variation in time intervals between heartbeats. The S24 measures HRV to provide insights into the autonomic nervous system’s influence on the heart. Higher HRV typically indicates a healthier balance between the sympathetic and parasympathetic nervous systems. Lower HRV may suggest stress or other factors that impact autonomic function. The S24’s HRV analysis provides users with a numerical representation of their HRV, allowing for tracking and comparison over time.

This feature is valuable for individuals seeking to understand the impact of stress, sleep, and other lifestyle factors on their cardiovascular health.

Comparison of Heart Rate Monitoring Modes

Monitoring Mode Data Collected Application Accuracy
Continuous Heart Rate Real-time heart rate fluctuations throughout the day Monitoring resting heart rate, detecting heart rate changes during activity High, based on algorithms and sensor technology
Resting Heart Rate Average heart rate during periods of rest Evaluating overall cardiovascular health, identifying potential issues High, but accuracy can vary based on user posture and environment
Exercise Heart Rate Heart rate during physical activity Monitoring intensity and tailoring workouts, tracking exertion levels High, typically accurate during exercise
Heart Rate Variability (HRV) Variations in time intervals between heartbeats Understanding autonomic nervous system function, assessing stress levels High, providing insights into cardiovascular health

Data Interpretation and Usage

How to measure heart rate on samsung health s24

The Samsung Health S24 app provides a wealth of heart rate data, offering valuable insights into fitness levels, health trends, and training effectiveness. Proper interpretation of this data empowers users to make informed decisions regarding their well-being and optimize their training routines. This section details how to effectively leverage this data across various aspects of life.

Fitness Tracking

Heart rate data is a cornerstone of fitness tracking. Monitoring heart rate during exercise allows users to gauge the intensity of their workouts. Different heart rate zones correspond to varying levels of exertion, enabling users to tailor their training to specific fitness goals. For example, a sustained elevated heart rate during a run indicates a higher-intensity workout, potentially burning more calories and improving cardiovascular fitness.

Monitoring resting heart rate over time provides insight into cardiovascular health improvements. A consistent decrease in resting heart rate can signal an improvement in overall fitness.

Health Monitoring

Heart rate data, combined with other Samsung Health S24 metrics, assists in comprehensive health monitoring. Consistent high resting heart rates may indicate underlying health conditions or stress. Monitoring heart rate variability (HRV) – the variation in time between heartbeats – can be a marker of stress levels and overall health. This is particularly useful for assessing stress responses and potential health issues.

Monitoring trends over time provides insights into the overall health status.

Training Optimization, How to measure heart rate on samsung health s24

Heart rate data is instrumental in optimizing training routines. By tracking heart rate during workouts, users can determine if they are training effectively. Identifying and adjusting training intensity based on heart rate zones ensures targeted progress towards fitness goals. Understanding individual heart rate responses to different types of exercise can guide the selection of appropriate training programs.

Monitoring heart rate recovery after exercise can indicate the effectiveness of the workout.

Daily Life Applications

Heart rate data can extend beyond fitness and training. Recognizing patterns in heart rate throughout the day can reveal potential stress triggers. For example, if a consistently high heart rate is observed before a particular activity, that activity could be a potential stressor. Tracking heart rate before and after consuming certain foods can help understand individual responses.

Moreover, heart rate data can assist in assessing the effectiveness of stress-reduction techniques.

Comparative Analysis of Heart Rate Data Usage

Context Specific Usage Key Insights
Fitness Tracking Monitoring exercise intensity, identifying heart rate zones, tracking resting heart rate changes Gauging workout effectiveness, improving cardiovascular health, tailoring training programs
Health Monitoring Identifying potential health conditions, assessing stress levels, monitoring HRV trends Understanding overall health status, recognizing potential stressors, identifying potential health concerns
Training Optimization Determining workout intensity, adjusting training based on heart rate responses, tracking recovery Optimizing progress towards fitness goals, ensuring targeted training, improving workout effectiveness
Daily Life Recognizing stress triggers, assessing food responses, evaluating stress-reduction techniques Understanding personal responses to daily activities, improving well-being, making informed lifestyle choices

Accuracy and Limitations of the Samsung Health S24

The Samsung Health S24, like all wearable heart rate monitors, provides a convenient way to track cardiovascular activity. However, understanding the inherent limitations of this technology is crucial for interpreting the data accurately and avoiding misinterpretations. Accuracy is influenced by several factors, and recognizing these limitations ensures users can leverage the data effectively without drawing erroneous conclusions.

Accuracy of Heart Rate Measurements

The Samsung Health S24 employs optical sensors to measure heart rate. These sensors work by detecting changes in blood volume variations in the skin. While generally accurate, the accuracy of these measurements can vary based on several influencing factors. Factors like skin tone, hair, and the presence of external light sources can affect the sensor’s ability to obtain precise readings.

This sensitivity to external factors necessitates a user-friendly approach to using the device.

Utilizing the Samsung Health app on the S24, users can accurately measure heart rate through a variety of methods, including continuous monitoring and manual readings. While the precise methodologies for measuring heart rate on this device are readily available, understanding the financial implications of pursuing a career in mental health counseling can also be important. For example, salaries for licensed mental health counselors vary significantly based on factors such as experience and location; further research on this topic can be found here.

Regardless of professional aspirations, the Samsung Health app provides a convenient tool for tracking vital signs.

Factors Affecting Accuracy

Several factors can influence the accuracy of heart rate measurements obtained from the Samsung Health S24. Skin tone variations, for example, can lead to inaccuracies, particularly in darker skin tones. The presence of hair over the sensor area can obstruct the light signal, resulting in inconsistent readings. External light sources, such as ambient light or direct sunlight, can also interfere with the optical sensor’s functionality, potentially leading to inaccurate heart rate readings.

Potential Limitations of the S24’s Heart Rate Monitoring

The Samsung Health S24’s heart rate monitoring, like other similar devices, has inherent limitations. These limitations are often related to the sensor’s reliance on optical technology. The accuracy of the readings can be affected by user positioning and the degree of contact between the sensor and the skin. Furthermore, certain physiological conditions, like excessive sweating or movement, may interfere with the sensor’s ability to provide reliable data.

These limitations should be acknowledged when evaluating the results.

Importance of Considering Limitations When Interpreting Results

Recognizing the limitations of the Samsung Health S24’s heart rate monitoring is paramount to properly interpreting the collected data. Users should avoid drawing conclusions solely based on the device’s readings, especially in situations involving strenuous exercise or unusual physiological conditions. Always consider the potential influence of factors such as skin tone, hair, or external light sources on the accuracy of the readings.

Understanding these factors allows for a more nuanced interpretation of the data and promotes a more holistic approach to health monitoring.

Table of Potential Sources of Error and Impact on Accuracy

Source of Error Impact on Accuracy
Skin tone variations (e.g., darker skin) Reduced accuracy, potentially leading to underestimation or overestimation of heart rate.
Hair over the sensor area Reduced accuracy, potentially leading to erratic or missed heart rate readings.
External light sources (ambient light, direct sunlight) Reduced accuracy, leading to potentially inaccurate or unreliable heart rate measurements.
Poor sensor contact with skin Inconsistent or unreliable heart rate readings, potentially affecting the overall reliability of the data.
Excessive sweating Interference with the optical signal, leading to inaccurate readings.
Significant movement during measurement Inconsistent or inaccurate heart rate readings, especially during exercise.

Comparison with Other Heart Rate Monitoring Devices

The Samsung Health S24, like many other smartwatches and fitness trackers, offers heart rate monitoring as a key feature. Comparing its capabilities to those of other devices provides a clearer understanding of its strengths and weaknesses, helping users select the best device for their needs. This comparison analyzes the S24’s performance against competing products, highlighting areas of excellence and limitations.The S24’s heart rate tracking performance is evaluated against other popular fitness trackers and smartwatches, considering factors such as accuracy, consistency, and the breadth of data provided.

This assessment identifies the S24’s suitability for various user needs, from casual wearers to serious athletes.

Accuracy and Consistency

The accuracy and consistency of heart rate measurements are critical for any device intended for health monitoring. The S24’s accuracy depends on several factors, including the user’s skin tone, the presence of hair, and the placement of the sensor. Variability in results can also arise from the device’s algorithm. Comparisons with other devices will illustrate the S24’s strengths and weaknesses in this regard.

Features and Data

The Samsung Health S24’s heart rate monitoring features are analyzed against those of other popular devices. This comparison evaluates the depth of data collected, such as resting heart rate, heart rate variability (HRV), and activity-related heart rate zones. This discussion explores how the breadth and depth of data affect the usefulness of the device for different users.

User Experience

The ease of use and overall user experience significantly impact the adoption of any device. The Samsung Health S24’s user interface for viewing and managing heart rate data is examined in the context of other devices. This includes considerations like data visualization, accessibility of metrics, and the overall ease of interpretation.

Comparison Table

Feature Samsung Health S24 Fitbit Charge 5 Apple Watch Series 8
Accuracy (average) High, but can vary with user and conditions. Generally high, known for reliable resting heart rate. Very high accuracy, consistently reliable in various conditions.
HRV Monitoring Yes, but limited detail compared to dedicated HRV devices. Yes, but data is less detailed than some competitors. Yes, comprehensive HRV data, useful for athletes.
Data Visualization Good, intuitive interface for tracking. Good, with clear displays and charts. Excellent, customizable charts and data summaries.
Price Moderate Moderate High

The table provides a concise comparison of key features between the Samsung Health S24, Fitbit Charge 5, and Apple Watch Series 8. Factors such as accuracy, HRV monitoring, data visualization, and pricing are considered. This allows for a quick overview of the comparative strengths and weaknesses of each device.

Closure

Measure for Measure: The Language of Measuring | Merriam-Webster

So, there you have it! Mastering your heart rate on Samsung Health S24 is now easier than ever. From basic setup to advanced tracking features, this guide provides all the tools you need to understand your body’s rhythm and optimize your fitness journey. Now you can confidently track your progress, interpret data, and make informed decisions about your health and well-being.

Keep it real and stay healthy, my friend!

FAQ

How often should I measure my heart rate?

It’s totally up to you, but measuring it regularly can help you track trends and understand how your body responds to different activities. Checking it before and after workouts is a great way to gauge your fitness levels.

What if my heart rate readings are inconsistent?

Several factors can affect accuracy, like your phone’s position or the quality of the signal. Make sure your phone is placed correctly on your wrist and try again in a different location if needed. If the problem persists, check the app’s settings for any issues.

Can I use the S24’s heart rate monitor during water activities?

Generally, no. The sensors aren’t designed for use in water. Stick to measuring your heart rate on dry land for the most accurate results.