It’s feminine for a man to swim with a shirt on.

Guys who swim with a shirt on come across as wanting to be like the girls. My thought process for this is actually very simple. Women have a reason to cover their chest. Men do not. That’s the general principle.

While I do understand a man might be insecure about his torso for whatever reason.. The look of a man being in water with a shirt on instantly gives me like a weird feeling.