Too warm, and I have no chance at all of getting any sleep.

I have yet to find myself too cold to fall asleep, so long as I have a comforter.

I’m in Northern California and we don’t have AC. 68-70F feels best for sleep with spring/summer/fall silk duvet insert. When I use light weight down comforter, I get sweaty at times. I feel like for down comforter room temperature needs to be lower that 68F or one need to be a cold sleeper.

The optimal temp identified was 68 degrees Fahrenheit

64-68 is definitely an ideal range for me

For me personally if it’s too warm it does make sleeping much more difficult

I wanna say there some research out there that says sleeping in a cooler room improves sleep quality. I’m guessing ‘cooler’ is probably subjective

Yes. My ideal temperature range is 75-77 ish and this is a major source of tension with people!

Yes, it's pretty common knowledge that you should have your bedroom a few degrees colder than the rest of your house to help with sleep quality.

i agree a cold environment helps me sleep, but not without a warm bed. i think it is the cold fresh air that makes me sleep well. not actually being cold. on cold nights i wake up to the detriment of my night rest

Learned this from the Joe Rogan podcast with Matthew Walker. For anyone struggling with sleep, watch that podcast. I lower my thermostat at night, and I sleep much better now.

Your body naturally increases and decreases in temperature over the course of a day, gets to it's lowest point overnight. accelerating that process (and disconnecting from screens so your brain can unwire itself) will help get to sleep faster

For me, it's getting under the cover cold, then warming up as I fall asleep. That's just the best feeling. However, it needs to be in a cold room. I hate being warm before going to my bed, it takes me ages to fall asleep.

It takes me less than 5. I keep my bedroom cool Las well (66 in winter, 68-72 in summer). I do the same thing every night - say prayers of Thanksgiving, clear my mind, turn on my right side, and somewhere in the middle of that, or shortly after, I go out.

I am a freak. All I normally need to do is close my eyes, get comfortable and I’m asleep in under a minute.

It is a gift.

But I’m single and I sleep alone (well other than my doggo)

Good sleep hygiene. When you enter into bed, you shouldn't have looked at screens for an hour or so beforehand, and the bed should be there only for sleeping (not twiddling on your phone, reading, etc.)

It takes time but once you do it, you fall asleep regularly within minutes of entering the bed.

Best sleep I ever had in my life was in a sleeping bag in a literally freezing barn

Source: Matthew Walker, a sleep neuroscientist.

>So an optimal temperature is about 68 degrees Fahrenheit or about 18 and a half degrees Celsius. And the reason is that your brain and your body need to drop their core temperature by about two or three degrees Fahrenheit to initiate good sleep. And that's the reason why you'll always find it easier to fall asleep in a room that's too cold than too hot. So having a cool room actually takes your brain and body in the right temperature direction to get good sleep

>When Schmidt and his team examined the brains of mice, their hunch was confirmed: There's a specific population of neurons in the hypothalamus that does just that. These neurons, called melanin-concentrating hormone (MCH) neurons, were found to increase REM sleep when the room temperature is at the high end of one's comfort zone. Mice that were genetically engineered to lack MCH receptors didn't increase REM sleep at warm temperatures, essentially rendering them temperature-blind in terms of sleep regulation.

Nobody's going to let them engineer people with missing neurons.

Yeah why wouldn't they say the most important piece of information here?

We have determined that there is a perfect temperature for humans to get the best possible sleep... No we aren't telling you

Give me subzero temperatures and a nice blanket, just don’t cover my feet please. Maybe feet temperature is what’s really important here? Hmmm.

Reference: Noemie Komagata, Blerina Latifi, Thomas Rusterholz, Claudio L.A. Bassetti, Antoine Adamantidis, and Markus H. Schmidt: Dynamic REM sleep modulation by ambient Temperature and the critical role of the melanin concentrating hormone system. Current Biology. 29, 1-12, 2019. https://doi.org/10.1016/j.cub.2019.05.009

Low temp, no light whatsoever (everything with a light in my room gets electrical tape on it) and consistent ambient noise are my 3 go tos for sleep issues. It doesn’t always work for me but sleeping in a hot room is murder for me.

I’ve found the same. Ex liked the temp to be about 75, I’m dropping it to 72 & sleep so much better. I’ll drop it farther to check.

It's a scientific fact that the brain sleeps better in temperatures under 70° lots of research

This is a part of "sleep hygiene" which is always the first line of treatment.

All I can do to change the temperature is open a window but then every car that drives by the house sounds like the Germans invading

i am literally awake right now because of nightmares caused by the ac being blocked and am waiting for the room to cool off before sleeping again. it matters. every single night. 100% undebatable. make ur room hot and then sleep and try it urself. its very obvious once it happens lol.

Scientifically, I can’t comment however, why not try it out for a week and see if you feel well rested? If you wake up, then maybe leave your a/c on. Also, does your window a/c have a fan option? Might save you some money using that instead.

I’ll try and find a source for this, but your CNS has to lower its temperature below normal in order to go into REM sleep. Ergo, your room should be comfortably cool, and if you have to pick between too hot and too cold, pick the cold option. You’ll sleep better.

If you look at the daily temperature changes, they start falling after dusk, and continue falling, with the coldest part of the day being just before dawn.

If you've ever gone tent camping on a cold night without an adequate sleeping bag, you become very aware of being exposed to the elements as the night wears on.

So it's not hard to imagine that we've evolved to be used to this, before humans had indoor heating.

Unless the temp in your room will change drastically by turning off the AC, you're probably fine. If it'll stay within around 15°F of where you fall asleep, your body likely won't notice while you're unconscious

This kinda depends on what that temp is tho. The change from 60°F to 75°F is very different in feeling than going from 75°F to 90°F

I have my AC set to 22 Celsius but my blanket is very warm. It’s just that any colder than that affects my sinuses and makes my nose dry with an AC, but when I lived in cold countries with temps around 0-10 Celsius I would sleep with the window open a little. If the heating was on too strong I wouldn’t be sleepy at all, but much of this might be anecdotal since am from a hot climate

Everyone’s different. I keep my house at 66°F/~19°C. I’d be sweating at 22°C. Just do whatever works for you

Yes, you should listen to your body and experiment because everyone is different. Cool and dry generally works for me, but not cold (unless it's winter and I don't have a choice).

Being in the UK, it's quite funny hearing 18-22C described as cold! But I guess it's relative to the typical temperature of where you live. Above 18C would certainly be too hot for me to sleep especially because I find it harder to sleep without a duvet. I have a quiet fan by my bed for when it gets that warm.

I would wake up to an empty house and divorce papers if I set the temp that low.

Crack open the window and snuggle in a down comforter.

I use a hot water bottle ... I put it under the covers 20 minutes or so before going to bed, and keep the room chilly otherwise. Cheap solution and so snuggly.

You know how expensive that would be in Florida?

We’ve programmed our thermostat to auto set to 60 after 11:00 PM. House cools down to the low 60’s as we sleep and the down comforter on our bed keeps us toasty warm all night. At 7:00 AM the heat pops back on and warms the house to 70. We’ve had it this way for 30 years.

Don’t waste your time looking for the temperature. It just says “high temperature “

“Thus, the scientists stressed that high temperature in the air of the bedroom affects the quality of sleep positively”

I've noticed that there is a correlation between the dreams I get and the sleeping position I am in during the dreams. When I sleep facing up (on my back, head to ceiling), I am more likely to experience sleep paralysis and nightmares. Asked around irl and on the web and others have too. So perhaps the best way to have happy dreams is to find a position that works.

Here are some studies I found about the topic:

https://www.ncbi.nlm.nih.gov/pubmed/12028482

https://psycnet.apa.org/record/2012-19542-001

69F gives me the best dreams.

oddly enough I can't sleep when the air is warm ... but then I'm not a mouse.