Sweat!

Something is making my new bed rather warm at night. Not sure if it is the cotton/polyester blend sheets (the ones on the old bed were all-cotton) or the waterproof mattress pad, which I bought in case of accidental drink spillage, or cat harking-up, to protect the mattress (has a rubberized bottom).

The air can be running, I can have TWO fans on "High" pointed at me, and I STILL sweat like a pig at night!