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Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

atlasobscura.com

21–30 of 78 posts

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#21

Is this a common thing? Sleeping without any sort of cover during the hot summer months (notably July and August) is the norm here (North Africa) and never heard of anyone who does it (AC or not). Is this an American thing? Do people in warmer regions of the country (Texas, Florida, ...) also feel the same?

Yes, it is totally a thing. We don't have a lot of hot nights in Denmark but when we do, we still sleep under a duvet, or maybe half under one and it is just as awful as it sounds.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#22

Is this a common thing? Sleeping without any sort of cover during the hot summer months (notably July and August) is the norm here (North Africa) and never heard of anyone who does it (AC or not). Is this an American thing? Do people in warmer regions of the country (Texas, Florida, ...) also feel the same?

In France some people do and some people don't but it's definitely a thing

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#24
post #23

Recently discovered that "weighted blankets" are a thing. https://en.wikipedia.org/wiki/Weighted_blanket

Weighted blankets are lovely if you have a neurodivergence that likes being enclosed (like me). But they are even more unbearable in hot weather

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#25

> "I barely know what a BTU is" Neither does anyone else, its one of those archaic units that changes slightly based on who is using it and hangs on in oil and gas industries, and also air conditioners and heaters. It was defined as the amount of energy to raise one pound of water by one degree Fahrenheit at one atmosphere of pressure, but that amount of energy depends on the starting temperature of the water, and di…

Why would the amount of energy required to increase the temperature of a defined mass of water depend on the temperature? This goes against the idea of specific heat (editing to add - I didn't realize that water's specific heat has a temperature dependence and changes around 5% over reasonable indoor temperatures https://www.engineeringtoolbox.com/specific-heat-capacity-wa... )

They're not saying the rate varies but the starting point. Going from 30C to 100C takes less energy than going from 20C to 100C even if specific heat remains physical. Both might get labeled a BTU.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#26
post #10

Earlier quoted context omitted.

No, it doesn't go against the idea of specific heat. You may be thinking of ideal gases and even then specific heat may or may not be constant: https://en.wikipedia.org/wiki/Perfect_gas

A specific heat is the amount of energy needed to raise a defined mass of a substance by a defined temperature. What does that have to do with a perfect gas?

The ideal gas model assumes point particles with no interparticle interactions, while all the interesting stuff with regards to all kinds of specific heat happens due to these things in... particular.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#27

Is this a common thing? Sleeping without any sort of cover during the hot summer months (notably July and August) is the norm here (North Africa) and never heard of anyone who does it (AC or not). Is this an American thing? Do people in warmer regions of the country (Texas, Florida, ...) also feel the same?

As someone who lives in the Northeast US but travels to Florida somewhat regularly it amazes me how low people keep the AC. It’s common for people and places, or at least those I visit, to keep the AC lower than I keep my heat in the winter(18c). So sometimes I’m so cold I have to ask for additional blankets or bring a jacket to a place like a movie theater.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#28
post #23

Recently discovered that "weighted blankets" are a thing. https://en.wikipedia.org/wiki/Weighted_blanket

Weighted blankets are lovely if you have a neurodivergence that likes being enclosed (like me). But they are even more unbearable in hot weather

I consider the weighted blanket to be a very dangerous invention. Dangerous to my planning, that is. If I try take a quick 20 minute nap under it, I always sleep for 2 hours minimum. It's like an off switch for my brain.

Extremely comfy.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#29

Is this a common thing? Sleeping without any sort of cover during the hot summer months (notably July and August) is the norm here (North Africa) and never heard of anyone who does it (AC or not). Is this an American thing? Do people in warmer regions of the country (Texas, Florida, ...) also feel the same?

I'm born and raised in Sweden, now live in Spain, cannot fall asleep unless I have something covering me, but I can also not fall asleep while sweating... So in the hottest months (July and August), I tend to just use a bed sheet as the cover, does the trick.

Re: Why Do We Sleep Under Blankets, Even on the Hottest Nights? (2017)

#30

Is this a common thing? Sleeping without any sort of cover during the hot summer months (notably July and August) is the norm here (North Africa) and never heard of anyone who does it (AC or not). Is this an American thing? Do people in warmer regions of the country (Texas, Florida, ...) also feel the same?

Yes, it is totally a thing. We don't have a lot of hot nights in Denmark but when we do, we still sleep under a duvet, or maybe half under one and it is just as awful as it sounds.

Are you sure? That seems like the sort of thing people might just not do. It can't take that many brain cells for an uncomfortably warm person to work out that more blankets make you more hotter -> less blankets makes you less hotter.

The article seems to provide very limited evidence that people sleep under blankets on hot nights and it sounds like a silly thing to do in the abstract. A lot of people would just remove the blanket when they get hot.

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