Making Connectoins (2.1)

I changed my Personal Project topic from, which is the smarter sex? to does a students grades change if they play a sport or not? I can relate that to myself. I play a sport, swimmiing, and i love it but i dont know if it affects my grades at all.It can affect them in a good way or a bad way depending on the student, if they are a bad student and leave everything for last second then they might be to tired to do any work, therefore it would affect them in a negative way. But if the person is a good student, the fact that they play a sport mnight nbe helpful because it would help them focus.