They can be overworked in their work outs and become fatigued. If they fall asleep early than they don’t have the time to do their homework or projects. This can affect their grades and after a while they can start to give up. Another reason them being tired is bad is because they can fall asleep during class and miss a lesson or something important for a test. If they spend all their time doing sports or working out they have no time for their education. Some athletes don’t care about the learning they just want to pass so they can play. This can lead to them cheating, which is very