When you go to bed and when you wake up affects your athletic performance, a study found.
“The most extreme example involves people who naturally go to bed late and wake up late. Even trying as hard as they can, they are as much as 26 percent slower when they sprint in the morning as in the evening. Individuals, like runners or cyclists, and people playing team sports, like soccer or football, would be affected.”
People who wake up early perform best mid-day, where as people who naturally stay up late and wake up late, tend to do best in the evenings.
But you can trick your body into performing better at different times a day (for example, if you happen to have a morning race you need to prepare for) by controlling your circadian rhythm.
Read more about it in this New York Times article: