Maybe he was suffering from Hyponatremia (low salt diet) (nerd)
Can't really do much about those creeps. In my local, its usually the male staff trying to flirt with the attractive women. Its so blatant and creepy but I would do my workout and get out.
I used to be a member of the one in Birmingham city centre - there was a guy there that got kicked out for licking the saddle of the stationary bike after a woman had used it. Vile vile vile
Pass... Pass. (cheeky) ....running out of options for day passes so thought I was going to have to actually pay full price (horror)