Lol yes, that's me in the picture.
I often get asked workout questions and will ask other guys myself, but I've noticed at my gym (which is a university gym) that people tend to feel each other out a bit before asking...and that goes for me too. I've seen most of the guys who ask me for tips in the gym at least 3x per week, and they've been regulars since the fall semester. I wouldn't be offended either way, but it's "reassuring" that they are gym regulars, more so because I know they are actually serious and that I'm not wasting my time explaining things to them, and also because they are taking note of my form and the outcome of my body and see it as something desirable. (Let's be honest, who doesn't appreciate comments about their body?!)
As someone else mentioned, I don't chat up other guys in the nude unless we have established some type of cordial relationship, which is something I have started doing much more this semester. I've even noticed guys who used to do the towel dance stop the act and let it all hang out around me since we've been talking.
Since I actually am sexually attracted to guys, 9 times out of 10, I let them approach me first. I have chatted guys up who are solo in the sauna just by asking basic questions like how long they normally stay in there, or after showering by commenting how it was a much busier/slower day than usual in terms of trying to get a shower (the swim team are shower hogs, so it's a founded argument).
Many guys have tried chatting me up in the shower which I personally don't like for no reason in particular than trying to be courteous to others. I don't like hearing people's personal conversations in closed/intimate spaces, so I practice what I preach. I think that's actually turned some guys off from talking to me altogether because I will just answer their questions but not engage them or try to keep the conversation going. It's something I'll try to work on moving forward (with new people lol).