Ouch, so you can't keep your temperature when sleeping? (or are you a wildchild: waking up without sheet covers and with one leg hanging outside while only wearing underwear instead of pj's)Usually my temperature is lowest after sleeping.
I only have that in the winter, when it's 50 degrees in my room. But a good waterbottle lasts me the whole night. What's your day/night rhythm? Do you go to bed before 12:00?