selfish jerks at the gym

[Irulan]

You could also try pointing out to them that resting between sets is a waste - they should be supersetting (doing another exercise in place of rest between sets) to burn more calories, get more cut, grow more muscle, etc. Generally the time it takes to do a set of another exercise is LESS time than they're standing around for, so it will get them off the machine faster, and they can do the same workout in 1/2 the time, which gets them out of the gym faster. Bonus for you!

This would probably go over about as well as the time I told some guys blabbing using the f_bomb for every other word at the top of their lungs to pipe down...