Fatigue Recovery Curve Calculator
Free Fatigue recovery curve Calculator for rehabilitation recovery. Enter your stats to get performance metrics and improvement targets.
Reviewed by Sher, Sports Science & Nutrition Specialist
Formula
Fatigue(t) = Peak \u00D7 0.5^(t/half-life)
Fatigue decays exponentially. Half-life varies: light exercise ~8h, moderate ~12h, heavy/DOMS ~24-48h.
Worked Examples
Example 1: Heavy workout
Problem:80% fatigue, 12h half-life
Solution:6h: 56%, 12h: 40%, 24h: 20%, 48h: 5%
Result:Full recovery ~50 hours
Example 2: Light recovery run
Problem:30% fatigue, 8h half-life
Solution:6h: 20%, 12h: 15%, 24h: 8%
Result:Full recovery ~20 hours
Frequently Asked Questions
What affects recovery speed?
Sleep (7-9h optimal), protein intake (1.6-2.2g/kg), hydration, age, training experience, and stress levels all significantly affect recovery rate.
How is the fatigue recovery curve calculated?
Fatigue(t) = Peak × 0.5^(t / half-life). This exponential decay model mirrors real physiological recovery, where the rate of recovery slows as fatigue decreases. The half-life is the time required for fatigue to drop by exactly 50%.
What is the half-life of fatigue after exercise?
Half-life varies by intensity: light activity about 8 hours, moderate exercise about 12 hours, intense training about 24 hours, and DOMS-inducing eccentric work about 36-48 hours. Individual responses vary based on fitness level and recovery practices.
References
Reviewed by Sher, Sports Science & Nutrition Specialist · Editorial policy