The short answer: your WHOOP recovery score is a daily 0–100% readiness rating — green (~67%+) ready, yellow (~34–66%) maintain, red (~33% and under) back off — and it's driven mostly by your overnight HRV, plus resting heart rate, respiratory rate, and sleep. The key skill isn't reading today's color; it's reading the trend against your own baseline, because recovery only means something relative to you.
Quick note: education, not medical advice. WHOOP estimates readiness; it doesn't diagnose anything.
What the recovery score actually is
Each morning WHOOP gives you one number — recovery as a percentage — in three bands:
- Green (~67–100%) — your body is recovered and primed for strain.
- Yellow (~34–66%) — maintaining; train, but don't force a peak.
- Red (~0–33%) — under-recovered; prioritize rest.
That single percent is a blend of four overnight inputs: HRV (the biggest driver), resting heart rate, respiratory rate, and sleep. When those line up well, recovery is green; when they're off, it drops.
What HRV means on WHOOP
HRV — heart rate variability — is the variation in the time between consecutive heartbeats, measured by WHOOP while you sleep. Counterintuitively, more variability is usually better: it reflects a relaxed, parasympathetic ("rest and digest") state. Low variability reflects stress, fatigue, or strain.
The single most important thing to understand: HRV baselines vary up to threefold between healthy people. An HRV of 60 might be excellent for one person and mediocre for another. So your number is meaningful only against your own rolling baseline — comparing your HRV to a friend's is meaningless. We cover this in depth in HRV, recovery, and peptides.
What counts as a "good" score
Good is relative. Green means ready; red means rest. But because the score is calibrated to your baseline, there's no universal target to hit — chasing someone else's "85% green" is the wrong game. Watch two things: the color (today's readiness) and the trend (is your baseline drifting up or down over weeks?). A baseline trending up means you're adapting well; trending down means something — training, sleep, stress, a deficit — is outpacing your recovery.
Why your recovery might be low
The usual suspects:
- Short or fragmented sleep
- Alcohol (a reliable HRV crusher)
- Late meals, especially large ones
- Stress — mental load shows up here
- Illness brewing (often the earliest sign)
- A hard training day prior
- Dehydration
And for anyone tracking a protocol: a calorie deficit or a new compound can suppress recovery too. That's not a bug — it's exactly the kind of cost you want to see.
| Recovery band | Meaning | What to do |
|---|---|---|
| Green (~67%+) | Recovered, ready | Train hard if you want to |
| Yellow (~34–66%) | Maintaining | Moderate; don't force a PR |
| Red (~0–33%) | Under-recovered | Rest, sleep, hydrate, ease off |
Why it matters for your protocol
Weight and body composition tell you the result of a protocol. Recovery tells you the cost. A cut that's dropping fat but quietly tanking your recovery week over week is a cut that's going to break — and you'd never see it if you only watched the scale. Reading recovery alongside your weight, body comp, and nutrition is how you tell a sustainable protocol from one that's running you into the ground.
That's what Peplens puts together: your WHOOP recovery and HRV trend on the same screen as your weight, body composition, and labs, anchored to the day you started — so you can see not just whether your protocol is working, but what it's costing. More on the full method in what metrics show your cut is working.
The Peplens Take
Don't grade yourself on a single morning's color, and never compare your HRV to anyone else's. Read your WHOOP recovery as a trend against your own baseline, know the handful of things that drag it down, and — if you're on a protocol — watch it next to your results, not in isolation. Recovery is the early-warning system that keeps a working protocol from quietly becoming a damaging one.
Medical Disclaimer
This article is for educational and informational purposes only and is not medical advice. Wearable recovery scores are estimates, not diagnoses. Always consult a qualified clinician for medical concerns. Peplens is a personal data-tracking and education tool, not a medical device or healthcare provider. Individual results vary.