I'm skinny, weak but angry
I've gotten into more fights than I care to remember. Usually I get my ass kicked and when I am teh victorious I feel so bad about it after that I come around to saying sorry to the person I had the fight with.
The way it feels when you hit people it's disgusting. Most people that enjoy that kind of thing must have the relative empathy of a brick wall.
Nevertheless it's good to get in at least a few fights in your young life (especially if you totally lose and get sent to a hospital or something) so you can aquaint yourself with unrestrained (the key word is unrestrained you goth self-mutilating faggots) physical pain and get on with your life without fearing it at all times. It's not as big a deal as it seems when you're in the fifth grade and the school bully is out for you.
However maybe that's not such good advice for you people in the states because here in greece you can get into a fight over basically anything but it ends when the other guy is down and bleeding whereas the angry thugs in the states will proceed to knife you to death and steal your wallet