I'm hirsute and therefore don't need a shirt with the exception of really cold winter days.
I'm hirsute and therefore don't need a shirt with the exception of really cold winter days.
I'm continually surprised by how many posters here seem obsessed with what others think of them.
Anyway, l'm in my late 40s and run shirtless here in New England pretty much continually from June through mid-Sept. Nobody cares. It's the these nice, warm, sunny days that get me through running outside in the winter.
To run shirtless, you need to either have visible abs or a Randy Bobandy belly. No in between.