Sleep is the best recovery tool
Muscles grow not in the gym but in your sleep. Why sleep is the most important recovery tool.
Fitness Coach editors 15 Jun 2026 1 min read
During deep sleep the body releases growth hormone, repairs tissue and consolidates movement skills. Too little sleep undoes even perfect training and nutrition.
How much you need
- 7–9 hours for most adults; athletes, closer to the upper end.
- Regularity matters more than one long night — go to bed and get up at the same time.
How to sleep better
- No bright screens in the hour before sleep.
- A cool, dark, quiet room.
- Caffeine no later than 8 hours before sleep.
- Alcohol disrupts the deep phases of sleep.
In short
If you have to choose between an extra workout and an hour of sleep, sleep usually wins.