You know, people always say sport is really important in life, and of course it's true... but sports are also cool. I remember when I used to practice taekwondo (it seems like thousands of years ago!). The thrill of a battle, your face full of sweat, adrenaline everywhere... you feel yourself like a superman or something like that. It's true you are not, but the feeling was so real. Be good, be happy and practice a sport.