cotton shrinks

I have this problem.
It's a common enough issue, but on a day paired with too-short pants, I reach maximum density. [Seriously, my pants (trousers, if you're reading this abroad) are completely too short. Which, incidentally, wouldn't be a problem if you're talking about (abroad) pants. Get it?]
I sweat. There's no use lying about it. It happens when I'm hot, but more forcefully when I'm cold. I'm currently cold becoming increasingly warm. Conundrum.