Girls, if a boy says something that isn't funny, you don't have to laugh.
Take your risks now; as you become older, you become more fearful and less flexible. And I mean that literally. I hurt my knee this week on the treadmill, and it wasn't even on.
Anybody who doesn't make you feel good, kick them to the curb. And the earlier you start in your life, the better.
There's power in looking silly and not caring that you do.