The ladies in gymnastics have incredibly small tits and most look a lot younger than they really are.. (Unless you like the small ones, personally I don't see it (literally), I'd rather have a girl with implants than an A cup).
i agree Tennis, or soccer the girls are the hottest imo. back in HS i had a gf who played soccer and just wow at her ass from all the running they did and she had a nice bubble butt.