WHOOP Sleep

The Sleep page in app provides a summary of the previous night’s sleep, highlighting the Sleep Performance score, which is the Hours of Sleep compared to the amount of Sleep Needed. Sleep Performance is reported on a 0-100% scale, with 100% indicating that you achieved all the Sleep you needed for the night. This page also provides statistics (Time in Bed, Disturbances, and Latency) for that night, relative to the average of the last 30 days.

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You can access more detailed statistics by tapping 'Hours of Sleep'. By clicking here, you will see you heart rate data for the entire time in bed, along with:

Disturbances - the amount of times you wake up through the night. These are not usually conscience awake times, but instead typically reflect times when you shifted in your sleep or came briefly out of a light phase of Sleep.

Efficiency - How long you were asleep relative to how long you were in bed. This period begins from the time you fell asleep to the time you officially woke up. For example, if you went to bed at 10:15 pm and woke up at 7:40 am, then the time you spent in bed would be 9:25 hours. However, the amount detected in this time was only 7:25 hours. If this is the case, the Sleep Efficiency would be about 80%.

Respiratory Rate - The average number of breaths a minute throughout the entire Sleep.

Sleep Stages - Swiping down will show you the Sleep Staging for the selected night. Clicking any of the radio buttons will highlight in red the points in time in the heart rate graph when you were in that phase of Sleep.

By clicking on 'Sleep Needed' on the Sleep page, you will see the total Sleep Need divided by your Sleep Baseline, Sleep Need you gained from any recent Strain you accumulated, Sleep Debt that is calculated based on the last few night's Sleep acquired related to Sleep needed, and any credit for Naps recently. 

Sleep Performance is a key component of your Recovery, and dedication to Sleep has been shown to improve athletic performance. WHOOP data demonstrates that both time spent asleep and time spent in REM sleep are positively correlated with performance.

WHOOP uses advanced sleep monitoring technology to accurately capture the true amount of time you are sleeping, not just the amount of time you spent in bed.

To read more about our Sleep algorithm, check out our Locker post: WHOOP Proven as Most Accurate, Non-Invasive Sleep Monitor

To read about Sleep Staging, check out this Locker Post: How Much Time Should You Spend in Each Stage of Sleep?

To read about Sleep Debt, check out this Locker Post: The Optimal Sleep Playbook: Managing Sleep Debt with WHOOP

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