I'm going to the gym quite frequently, so does the guy this question revolves around. I don't really like chit-chatting (or talking in general) while im working out - I'm usually in my zone, with headphones on and music blasting. Never had an issue with someone interrupting me.
Yesterday though, the gym was pretty well visited. Thus I had to work in on the same machine with this guy (he did his set and while he takes a break I did my mine, and so on) so none of us had to wait.
Thing is, he was doing a slightly different exercise than me and then tried to convince me to do this exercise too, because to him it seems superior. I tried to tell him I'd rather do the exercise I normally do but he kept on talking about the benefits, which annoyed me a lot.
I hate it when people try to talk me into something which clearly is not on my current workout routine or try to correct my form. Especially when it's like this guy, who has horrible form himself and doesn't seem to know a lot about the exercises. (all of this I obviously didn't say to him, because I don't want to sound rude)
How can I turn him (or others) down quicker in the future?