Sleep is a performance enhancer
Studies show that extending sleep from 6.5 to 8.5 hours improves time-to-exhaustion, sprint times, and reaction speed within a week. No supplement does that.
What gets worse with poor sleep
After one or two short nights:
- Perceived effort rises 15-20% at the same pace
- Time-to-exhaustion drops 10-30%
- Reaction time and pacing decisions degrade
- Cortisol stays elevated — recovery slows
Race-week sleep math
The single most important sleep night is two nights before the race — research shows this is the night that correlates with race-day performance, not the night immediately before. Plan around it.
Build the habit, not the heroics
One amazing night doesn't save a week of 5-hour nights. Trailing 7-day sleep average is what matters. Stridely tracks this and surfaces it daily.
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