I should point out that there are some great guidelines on BroScience [https://www.youtube.com/watch?v=PTUW77ie8sE]. That’s where I got my guidelines from, I’ve added a little from personal experience. Learn from my mistakes!
At the beach is pretty much self explanatory. That’s, quite literally, where people go to take their shirt off. A bit of sun and you can pretend you’re on your holidays in Spain. Catch some of the rare, Northern-English sun. At the beach it doesn’t matter if you’re the first one to take your shirt off. It’s expected. I will, however, offer some advice. If it’s cold leave your shirt on. It cancels out your gains if you’re sat there shivering.
When taking part in sports it’s okay to take it off. No point in sweating through a perfectly good shirt. Here it comes down to a bit of self- awareness. Sure, take it off if you’re playing football outside. Don’t take it off if you’re bowling. As a martial artist, I’ll point out that it is a grey area. I don’t mind training shirtless, but I’d never be the first guy. In this situation I wouldn’t need to be the third guy either. If one guy has his shirt off and the instructor is cool with it, then it’s cool. It may be the same for other sports but you’ll have to use your own initiative.
Finally, when you’re out in a club and it’s sweaty as! I’m pretty bad for this, so there’s a few things to remember. It’s okay if you’re drunk. You have diminished responsibility over your actions if you’re drunk. But remember, you do it a couple of times and your friends will claim ‘you always take your shirt off’. They will refer to it in front of people you haven’t been out with, they will try to embarrass you with it. But, obviously, you don’t care. Just be aware that this will happen. Try not to get told to put your shirt back on by the bouncers or any other member of staff at a venue, it kind of kills the buzz a bit. If you take your shirt off on a night out. Be aware that you will get more attention off guys than girls. They will be mirin’ your gains. Removing my shirt has never done anything to improve my chances with a girl. But I often get compliments from guys. But, lets be honest, if you spend all your time in the gym. A compliment from a guy is what you’re looking for. Especially if he lifts (see below). I don’t pretend to understand women, but they don’t appreciate muscle size and vascularity as much as they should (or at least they say they don’t)
An exception to all the rules is when you’re on holiday. Fuck it, don’t even wear a shirt. You’ve got a couple of weeks of sun, in a place where nobody knows you. Save space in your luggage, don’t even pack any shirts and bring back some extra duty free.