Cool bedroom

Under bedding, sleep didn't measurably differ anywhere between 13 C and 23 C.

Also called ~18-19 C

Who it's forAny man who wakes up sweating and blames his thermostat.

The item

Three squares: proven in human trials. Two: a strong signal. One: early human data. Striped: the trials disagree.

Emergency: call 911.

I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.