i have to wonder if the reason people are having difficulty sleeping is that they've been told to turn the heat down at night to save energy costs. i mean, generally humans react to cold by waking up and react to warm by getting drowsy. if you want a good night's sleep, turn the heat up!

to be clear: because heat makes us tired and cold keeps us awake, the way to set your thermostat properly is to turn it up before you get to bed and turn it down when you wake up (and put on a sweater, if you're cold). that's the opposite of what most people do, because they're confused about how their bodies react to temperature. at least in ontario, that should also give you greater savings because the rates are set to be cheaper over night.

www.theweathernetwork.com/news/articles/heres-how-to-get-a-perfect-nights-sleep-this-winter/59418?intcmp=twn_promo_news1

Alice Ho
Our core body temperature drops during sleep. So in actual fact, a too-warm bedroom will end up causing sleep disturbance (as anyone trying to sleep on a hot summer's night knows). Sleep experts suggest a slightly cool temperature is the best for sleep. Taking a warm bath before sleeping is helpful (not because it warms the body but) because the skin capillaries vasodilate to allow the body to cool down as you are trying to fall asleep.

jessica murray
see, this is comical. if your body temperature drops during sleep, it stands to reason that you should turn the heat up to compensate, right? i can only speak for myself, but i sleep best in the summer [i'll stick with a blanket in 40 degree humidity, then sweat all night - and those are the best sleeps!]. it's those cold nights that keep me up staring at the ceiling, feeling like i should be doing something else...

from a biological perspective, you want to keep the heat up. the pop science is confused.