When the sweatshirt over the shirt over the tshirt still didn't cover it, I had to put on the space heater AND get into bed under the covers. Too cold to actually turn around and watch tv, i had to keep my arms under my chest and lay on my stomach. When 9 pm rolled around, I was STILL too cold to watch house. Too cold to get out of bed, I decided to just sleep with the lights on. wake up at 5 am, with the heater having run ALL night, and I'm still pretty cold. This can't be healthy.