Recovery Score: How Well Did Your Body Recover Last Night

Sleep isn't just about being unconscious. Two people can sleep 7 hours and experience vastly different levels of recovery. The Recovery Score answers exactly this: how much did your body actually recover during sleep.

How It Differs from Sleep Score

Simply put: Sleep Score evaluates how you slept (duration, depth, efficiency), while Recovery Score evaluates how your body recovered (cardiovascular, autonomic nervous system, respiratory).

Someone might sleep 8 hours with good structure (high Sleep Score), but if they were under heavy stress or drank alcohol, their autonomic nervous system may not have fully recovered (low Recovery Score). The two scores complement each other to paint a complete sleep picture.

What Data It Uses

Resting Heart Rate (RHR) — The lower your heart rate drops during sleep, the more thoroughly your cardiovascular system rests. Recovery Score tracks your nighttime minimum relative to your personal baseline.

Heart Rate Variability (HRV) — Reflects the adaptability of your autonomic nervous system. Higher HRV means your body more completely shifted from sympathetic (fight mode) to parasympathetic (recovery mode).

Respiratory Rate — Breathing rate during sleep reflects overall relaxation. Abnormal elevation may indicate your body is fighting an infection or other stressor.

Heart Rate Dip Depth — How deeply your heart rate drops from sleep onset to deep sleep. A deeper dip means more thorough recovery.

What the Score Means

• 85-100: Fully recovered — body is ready for high-intensity activity and challenges
• 75-84: Well recovered — normal level, can maintain your daily rhythm
• 60-74: Moderate recovery — body may need extra rest, consider reducing intensity
• 45-59: Under-recovered — investigate the cause, prioritize rest
• Below 45: Significantly under-recovered — prioritize rest, avoid high-intensity activity

What Affects Recovery Score

Exercise intensity and timing — After intense workouts, your body needs more recovery time, and that night's score may temporarily dip (this is normal). Afternoon exercise is more recovery-friendly than late-night training.

Alcohol — Even small amounts noticeably suppress HRV and deep sleep. You might feel alcohol helps you fall asleep faster, but the data usually tells the opposite story.

Stress and anxiety — Sustained psychological stress keeps the sympathetic nervous system active, preventing your body from switching to recovery mode.

Pre-illness signals — Recovery Score often drops before symptoms appear. If it's unusually low for several consecutive days with no obvious cause, your body may be fighting something.

How to Improve

The most effective strategy isn't targeting the score directly, but optimizing the upstream factors: consistent sleep schedule, moderate exercise, controlling caffeine and alcohol, managing stress. Mellows' breathing exercises can help activate the parasympathetic nervous system, preparing your body for better overnight recovery.