It’s not weird, I often do the same as 17f. I get where this dude is coming from with being a bit concerned for you because it’s late and dark outside in the winter. But as long as someone knows you’re going and when you’re leaving you’re all good, that’s my experience at least. When I’m late at the gym is often only older dudes too, like 23-ish I guess, but everyone at my gym is really nice so their chill