I sweat a lot normally.. I don't notice any increase on most gear, but the first few times I used tren I got night sweats really bad.  I would wake up several times a night with my pillow and sheets soaked.  Ended up having to just sleep on towels and change them out several times a night.  Now that I've used tren quite a few times it doesn't really have that effect anymore.. then again, I use much lower doses than I did when I was in my 20's.. either that or the gear is weaker lol.  Like everyone else asked, what are you running?