I'm a guy. Ever since I started working out (VERY recently), I've caught more than a few guys randomly looking at me at different places (grocery store, coffee shop, etc.). What's going on?

I'm just minding my own business and wearing a regular long-sleeve shirt and jeans, nothing fancy. It isn't making me uncomfortable or anything... just wondering what this sudden attention is from.

I'd much rather have women looking at me but c'est la vie (maybe women are looking at me but are more sneaky about it, I don't know).