I second just about everything that’s been said, except the remark about the scantily clad females ;). Actually I wish we guys could get a little more skimpy as well, 'cause it does get warm when you’re working out But bulky and baggy seems to be the rule of the day.
Aside from that, I’m surprised no-one has mentioned the locker room slobs. My gym has free lockers that work like hotel safes. You put your things in, punch in a code to lock it, and later you use the same code to unlock it. You can even use two or three at the same time, if you have to. And I did say it’s completely free, so there’s no excuse not to use the lockers. So why, in the name of all that’s holy, do some schlubs have to spread out their sweaty used gym clothes, towels, and bags all over the bench, while they take a dump and shower?