Recovery Score
Your body's readiness verdict after last night
Plain English
Recovery Score is WHOOP's daily metric for how recovered your body is from accumulated physiological stress, expressed as a percentage from 0 to 100. It is calculated each morning from the previous night's sleep data, and draws primarily on heart rate variability, resting heart rate, sleep performance, and skin temperature deviation. A high score means your body has processed stress well; a low score means it is still under load.
The Mechanism
WHOOP calculates Recovery Score each morning from four primary inputs. HRV (using RMSSD measured during slow-wave sleep) carries the most weight and reflects the balance between sympathetic and parasympathetic nervous system activity. Resting heart rate during sleep reflects cardiovascular load and recovery status. Sleep performance compares actual sleep to WHOOP's estimate of your sleep need. Skin temperature deviation adds a layer of physiological stress signal, rising during illness, alcohol metabolism, or high training load.
These inputs are combined using a proprietary algorithm that weights each signal by its predictive relationship to performance and readiness, calibrated to your personal baselines over your first 30 days. Because the score is personalized, two people with the same absolute HRV can have different Recovery Scores if their personal baselines differ. The result is expressed as a color-coded percentage: green (67 to 100) signals strong recovery and readiness for high-effort training; yellow (34 to 66) suggests moderate load or incomplete recovery; red (0 to 33) indicates the body is under significant stress and high-intensity training will add cost without benefit.
The Recovery Score is a composite signal, not a direct measurement. It is most useful as a daily decision input when read as a trend over days and weeks rather than a single-night verdict. A single red day is noise; a week of yellows and reds is a pattern worth investigating.
Why It Matters
Your body knows it is under load before you do. Recovery Score makes that signal legible.
Recovery Score gives you a daily answer to the question: should I push today or back off? The color-coded system translates multiple overlapping physiological signals into a single actionable decision. Research on HRV-guided training, including Kiviniemi et al. 2007 and Plews et al. 2013, shows that readiness-based training decisions improve long-term adaptation outcomes compared to fixed-schedule training. The primary error most people make is overriding a red or low-yellow score without cause; the score is most valuable precisely when it contradicts how you feel subjectively.
Common Misconception
Many WHOOP users treat Recovery Score as a fitness score, chasing green to feel validated. It is not a fitness metric. A green score means conditions are favorable for high effort; it says nothing about whether you are fit, getting fitter, or making progress. Athletes in heavy training blocks spend many days in yellow and occasionally red. That is not a failing, it is the physiological cost of a hard training block that will be paid off in supercompensation during the recovery phase.
What a Healthy Range Looks Like
Red
0–33%
Significant physiological load; high-intensity training will add cost without adaptive benefit
Yellow
34–66%
Moderate recovery; train at planned intensity or reduce volume on back-to-back yellow days
Green
67–100%
Strong recovery; favorable conditions for high-effort training or competition
There is no universally healthy Recovery Score. Athletes in high training blocks regularly operate in yellow. The most informative signal is your trend over 7 to 14 days, not your score on any given morning. Consistent green across a week suggests adequate recovery relative to training load.
Signs It Is Disrupted
- Five or more consecutive days below 50% without a clear explanation in training load, illness, or life stress
- Recovery Score failing to rebound after a planned deload week
- Daily green scores while performance is declining, which can indicate the body has adapted to chronic under-recovery
- Wide day-to-day swings with no change in training or lifestyle, suggesting measurement noise or inconsistent sleep quality
How to Improve It
Which Devices Track It
WHOOP
Recovery Score is a WHOOP-proprietary metric; it is the primary daily output of the WHOOP system and is calculated each morning from the previous night's physiological data, personalized to your 30-day rolling baselines.
Oura Ring
Oura calls its equivalent metric the Readiness Score; the underlying inputs are similar (HRV, resting heart rate, temperature deviation, sleep) but the algorithms differ and scores are not numerically comparable between platforms.
Garmin
Garmin reports Body Battery, an energy estimate that shares conceptual overlap with Recovery Score but uses a different algorithm and input weighting, producing values on a 0 to 100 scale that are not directly comparable to WHOOP Recovery.
3 Things to Remember
Recovery Score is a WHOOP composite of HRV, resting heart rate, sleep performance, and skin temperature deviation, expressed as a percentage and color-coded green, yellow, or red for training decisions.
It is most useful as a trend signal over 7 to 14 days; single-day readings are noisier than weekly patterns, and a week of reds or yellows is a more meaningful signal than any individual score.
Recovery Score is not a fitness metric; athletes in productive training blocks regularly operate in yellow, and the goal is not to maximize green but to use the signal to avoid accumulating load beyond your recovery capacity.
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