So I have my BPs UTH hooked up to a rheostat. I check in on her every once in a while to see what the temperature is reading. It's just annoying that is fluctuates to much.

My question is, is this really stressful on her, to have the temp constantly changing? Even if it's ranging from 87-90F? I just don't know what else I can do to keep it more constant. Help please?