Some people sweat more than others, it's genetic. You see people at the gym who are lean and sweat like crazy, and others who don't. Admittedly people who are more overweight than others often sweat more, but it varies from person to person. Maybe it's humid where you live? That can make people sweat badly.
I sweat like crazy. I used to sweat, no joke, watching tv. It sucked because I used to have to wear dark clothes because sweat marks under my arms would show. I use a 15% antiperspirant, works great.
But yea, usually heavier people sweat more but everyone is different. I'm lean and sweat more than anyone I've ever seen under my arms if I don't use my antiperspirant.
