> Again, this makes no sense to me, since your body temperature rises when you sleep. It would seem, therefore, that the reason it SEEMS colder when you wake up is because your body temperature is higher than when you went to sleep. Call me nutty. Does anyone know the real answer?

I asked Jeeves (www.askjeeves.com), and found the site linked below where, clearly (thanks, HTBP!), fig. 2 shows that your bodily temperature is lowered during sleep. So my theory still stands.

Trav"so there!"holt.