It depends on what you mean, If you mean "What hormone increases the performance of an athlete" then the answer is testosterone. This hormone is naturally secreted in much bigger quantities in men than in women, but both men and women secret testosterone.
When an athlete demonstrates overwhelming joy (from winning/scoring a point/game/match) it is usually the testosterone kicking in, that is why the athlete usually fists the air and/or shouts enthusiastically.
a sports athlete is a person who only plays and cares about sports.
An athlete
I think that it would be : ATHLETE
Athlete or musician
Yes, unless the school's intramural sports department has a rule prohibiting it.
jock
reticular formation
It is the hormone thymosin. It is secreted by thymus.
ross donnely
musician, athlete, actor
An amateur.
Larry bird