Accidental Aesop: If you try to better yourself, you won't like it and your friends and family won't accept you until you "snap out of it".
Estrogen Brigade: Plenty of stills of various male models as well as plenty of gratuitous shots of shirtless men of varying physiques. Hell the series even shows the tryouts for the cover of a fitness magazine that has a dozen different guys stripping off to have their bodies examined.
Hilarious in Hindsight: One man in the locker room says "someday a man's gonna find a use for a tampon". It's these days quite common for boxers to use tampons for bloody noses.
Squick: When Hayley finds out that Tim has been drinking his own urine (and kissing her), she is not happy.