Extreme obesity

Is it normal to notice an increase in sweating with weightgain?

I tend to sweat a lot, I wish there was a way to stop it from happening, but I guess it's just something you learn to deal with.

That's part of why I shower every morning

Is the amount that we sweat proportional to weight gained?

Definitely...I'm always sweating even in only slightly warm weather and only slight physical exertion.Hate it,but have to live with it.

For sure -- takes more energy to move more mass, so you make more heat, plus you have a lower surface area to volume ratio, and as whales know blubber is good insulation.