Lol, LIFT WEIGHTS for AGGRESSION of COURSE! It boosts testosterone and the stronger that you "think" you are compared to everybody else, the more aggressive you will be. I mean, let's say your a sophomore and your playing a game against your little brother's friends. Wouldn't you want to use your size to bang the crap out of them?
Also, the thing about football players I notice when they crossover to basketball is that they focus on hitting the other player and not putting the ball in the hoop. So in essence they neglect the finesse part of the game and expend too much energy checking the other guy.