Go out for football.
It will help you physically.
Football will you get you in shape and it also makes you stronger. You can actually get smarter playing football. An example is like you need to get in front of the ball carrier to tackle him so you need to find the right angle to get your head safely on the outside of the ball carrier so that makes you at least a little smarter and you have to do all this fast.
How To Tackle In American Football