My female friends do, so yes

Not necessarily. I've noticed female friends tend to be much more adept at physical affection on the whole. Men tend to have a much wider range, with some hugging you (male) like a 2x4, whereas others shimmy over to you and rest their head or arm around you on a chairlift.

Mostly, I wanted to hear how male-male friends and family treated each other physically, without the complication of SOs or romantic partners fuzzing the responses (since people tend to already be physically affectionate with romantic partners).

It's been really interesting to hear, the responses are much more diverse than I was expecting, and it's really heartwarming to see.

Wrestling, I'm not sure about, but a lot of people platonically snuggle. A lot of it is cultural and also down to your upbringing, but not everyone sees physical affection as something you can only get out of romantic relationships.