Most guys I know, will admit to masturbating at the gym/club in the locker room showers, occasionally. Something about all the hard working out/exercise, sweating, heavy breathing, hormones/testosterone, adrenalin, endorphins, good looking bodies, watching others working out in their gear, odors and aromas, being naked with others, and a shower, can get us so horned up, that we take matters into our own hands!