Many people worry that not sleeping before an event will have an affect on their performance.One night of tossing and turning is not going to effect your race, but a chronic lack of sleep does.
Results from a sleep restriction study on cyclists found that reducing sleep to 4 hours a night for three days had a significant effect on performance. Cyclists reduced their ability to burn calories by 4%, reduced aerobic power by 3% and their time to exhaustion decreased by 11%.
Being chronically sleep deprived reduces the benefits you get from being fit as well as being a health risk.
For best results get a good nights sleep.
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