I sweat a lot too. I've joked here before that after a workout, I like to jump in the shower to dry off... But as far as I can remember, I've always sweated.

Is it more humid than past years in your area? It sure is here. I had to put a beach towel on my spot on the couch, and the hottest it's been in the house is only 85°, it's just that humid.

+1 that increased sweat volume (and conservation of sodium) is part of heat acclimation.

I like to sweat. It's hard on dress clothes for sure, though.