Colin Snow
WHOOP is a wrist-worn device that measures all four types of sleep with lab-level accuracy. It collects hundreds of data points per second from its 3-axis accelerometer, 3-axis gyroscope, and PPG sensor. WHOOP calculates how much sleep you need based on recent sleep patterns, the strain from the day, sleep debt, and any recent naps. It also calculates your recovery on a scale of 0 to 100% during sleep, looking at your heart rate variability (HRV), resting heart rate, respiratory rate, SpO2, sleep performance, and skin temperature. This data helps WHOOP provide insights that can help you sleep better, such as adjusting your bedtime and improving sleep efficiency.
| Characteristics | Values |
|---|---|
| How does Whoop calculate sleep need? | By measuring all four types of sleep with lab-level accuracy: slow wave sleep (SWS), REM, light, and awake |
| How does Whoop measure sleep? | By collecting hundreds of data points per second from a 3-axis accelerometer, 3-axis gyroscope, and PPG sensor |
| How accurate is Whoop? | A Central Queensland University study found Whoop to be 99.7% accurate in identifying sleep when compared to the gold-standard polysomnography (PSG) |
| How does Whoop calculate recovery? | By looking at heart rate variability (HRV), resting heart rate, respiratory rate, SpO2, sleep performance, and skin temperature to see how the body is adapting to physiological and psychological stress |
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What You'll Learn
- Whoop measures all four types of sleep: slow wave sleep (SWS), REM, light, and awake
- Whoop calculates your recovery on a scale of 0 to 100% during your sleep
- Whoop uses a 3-axis accelerometer, 3-axis gyroscope, and PPG sensor to collect data points
- Whoop considers your health, behaviours, stress levels, hydration, and more
- Whoop's accuracy has been validated by Central Queensland University and the University of Arizona
Whoop measures all four types of sleep: slow wave sleep (SWS), REM, light, and awake
Whoop calculates how much sleep you need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken. It will suggest optimal bedtimes based on what your body needs to recover.
Whoop has been found to be excellent at identifying sleep when compared to the gold-standard polysomnography (PSG) and outperformed other devices in calculating total time spent asleep. It collects hundreds of data points per second from its 3-axis accelerometer, 3-axis gyroscope, and PPG sensor.
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Whoop calculates your recovery on a scale of 0 to 100% during your sleep
Whoop measures all four types of sleep with lab-level accuracy and will suggest optimal bedtimes based on what your body needs to recover. It tracks all four stages of sleep — slow wave sleep (SWS), REM, light, and awake — with near-perfect accuracy. Each stage serves a different purpose in your recovery. Whoop calculates how much sleep you need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken.
Whoop was designed from the ground up to provide the most accurate possible sleep tracking. It collects hundreds of data points per second from its 3-axis accelerometer, 3-axis gyroscope, and PPG sensor. Third-party studies have found that Whoop is 99.7% accurate in identifying sleep when compared to the gold-standard polysomnography (PSG).
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Whoop uses a 3-axis accelerometer, 3-axis gyroscope, and PPG sensor to collect data points
Whoop uses a 3-axis accelerometer, 3-axis gyroscope, and PPG sensor to collect hundreds of data points per second. This level of precision means that Whoop can provide sleep insights that help you sleep better. It measures all four types of sleep with lab-level accuracy, and will suggest optimal bedtimes based on what your body needs to recover. It tracks slow wave sleep (SWS), REM, light, and awake. Each stage serves a different purpose in your recovery.
Whoop calculates how much sleep you need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken. It also calculates your recovery on a scale of 0 to 100% during your sleep, looking at your heart rate variability (HRV), resting heart rate, respiratory rate, SpO2, sleep performance, and skin temperature to see how your body is adapting to physiological and psychological stress. The biggest influence is your HRV, but it also considers your health, behaviours, stress levels, hydration, and more.
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Whoop considers your health, behaviours, stress levels, hydration, and more
Whoop measures all four types of sleep with lab-level accuracy, and will suggest optimal bedtimes based on what your body needs to recover. It tracks all four stages of sleep — slow wave sleep (SWS), REM, light, and awake — with near-perfect accuracy. Each stage serves a different purpose in your recovery. Whoop calculates how much sleep you really need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken.
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Whoop's accuracy has been validated by Central Queensland University and the University of Arizona
Whoop's accuracy has been validated by Central Queensland University (CQU) and the University of Arizona. After over two years of research and validation using gold-standard sleep tracking polysomnography (PSG) data, Whoop is now even better at measuring sleep stages (awake, deep sleep) and making your sleep data more reflective of how your body rests and recovers. According to Whoop internal testing, classification accuracy across the four sleep stages has improved by over 7%, leading to more precise insights into how much time you spend in each sleep stage. The ability to detect wake from sleep has improved by over 3%.
A study of leading wrist-worn wearables revealed that Whoop was the most accurate across several categories when compared to the gold-standard PSG. This level of precision means you can trust Whoop to provide sleep insights that help you sleep better—whether that’s adjusting your bedtime, improving sleep efficiency, and beyond. Whoop was designed from the ground up to provide the most accurate possible sleep tracking. It collects hundreds of data points per second from its 3-axis accelerometer, 3-axis gyroscope, and PPG sensor.
Whoop calculates your recovery on a scale of 0 to 100% during your sleep, looking at your heart rate variability (HRV), resting heart rate, respiratory rate, SpO2, sleep performance, and skin temperature to see how your body is adapting to physiological and psychological stress. The biggest influence is by far your HRV but it also considers your health, behaviours, stress levels, hydration, and more.
Whoop calculates how much sleep you really need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken.
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Frequently asked questions
Whoop calculates how much sleep you need based on recent sleep patterns, the strain from the day, sleep debt you’ve accrued, and any recent naps you’ve taken.
Whoop measures sleep by collecting hundreds of data points per second from its 3-axis accelerometer, 3-axis gyroscope, and PPG sensor.
Whoop uses gold-standard sleep tracking polysomnography (PSG) data from Central Queensland University and the University of Arizona to measure sleep accuracy.
Whoop calculates your recovery on a scale of 0 to 100% during your sleep, looking at your heart rate variability (HRV), resting heart rate, respiratory rate, SpO2, sleep performance, and skin temperature to see how your body is adapting to physiological and psychological stress.
