Shouldn’t it be the most comfortable temperature? 🤔
Because you need to transfer that heat somewhere.
150 degrees F is a normal temp for a CPU, but your computer isn’t gonna run well in a 150 degree room.
If the body's natural temperature is about 98 degrees (F), why does it still feel really hot when the ambient temperature is 98F?
Submitted 1 year ago by Kolanaki@yiffit.net to [deleted]
Comments
CharlestonChewbacca@lemmy.world 1 year ago
InfiniteFlow@lemmy.world 1 year ago
Your body, as a warm-blooded animal, tries to keep a constant temperature (around 98°F or 37°C). Thing is, the body is constantly producing more heat (your metabolism at work…) and needs to get rid of the excess. If the air around you is at the same temperature as you are, it is very hard for heat exchange to take place (for you to get cooler as the air gets hotter) and, thus, you overheat a bit and feel warm.
This is why wind makes you feel cooler: it moves the heated air away from your body and brings in new, cooler air, making the exchange more efficient. Evaporation takes heat away as well, hence we sweat to col ourselves down.
NewBrainWhoThis@lemmy.world 1 year ago
- Your body produces heat.
- Generation and removal of heat must be balanced to keep the body temperature equal.
- Heat transfer is enabed by conduction, convection and radiation.
- If the body temperature equals outside temperature, convection and radiative cooling is reduced
- your body temperature rises till equilibrium is achieved
DrQuint@lemm.ee 1 year ago
The internal temperature is whatever you said. That’s the temperature your guts need to live.
You have a gigantic organ providing insolation between that and the world. It’s called skin.
maporita@unilem.org 1 year ago
Another reason a fan works is because it increases evaporation of sweat. Evaporation involves a phase change which requires energy. That energy is extracted from the body surface. Without air flow the envelope of air next to the skin gets saturated meaning it can’t hold any more water vapor, so evaporation stops.
scarabic@lemmy.world 1 year ago
I was in the carribean recently and OMG with that humidity an 85 degree day was the worst heat I can recall. I live somewhere that it reaches 100 in the summers. But it’s dry here. And that makes so much difference.
It really made me wonder about my dog, who cannot sweat. Is he dying on an 85 degree day?
HeyThisIsntTheYMCA@lemmy.world 1 year ago
I’ve often wondered about our furred friends. Don’t dogs and cats have an internal temp around 101°F (39°C)? That is what searching tells me. I’d think it’s a function of the fur but I’m not sure how it works per cooling.
FuglyDuck@lemmy.world 1 year ago
Keep in mind, 98f is your core temperature.
Extremities are colder.
This differential is critical to managing our core temperature, which is maintained by putting in more energy (running hot) and allowing processes to cool off.
This is much more consistent and allows us to inhabit a much greater array of environments than things that are cold blooded.
quicksand@lemm.ee 1 year ago
I was gonna chime in, but it appears a number of engineers have already answered the question. Source: I’m an engineer
rebelappliance@lemmy.dbzer0.com 1 year ago
Your body needs to release that heat or risk overheating (heat stroke). If the outside temp is the same as the inside, then you have to rely 100% on sweating. So you’ll feel hot due to the slowing release of heat energy.
Wogi@lemmy.world 1 year ago
Your body is generating heat constantly. It’s also attempting to keep the amount of heat created and the amount of heat lost about the same.
As long as the temperature outside is significantly lower than your body’s temperature, it’s pretty easy. Until it gets too cold at least.
When the temperature outside is close to your body temperature, then losing excess heat becomes more difficult. The higher the temperature climbs the more work your body has to do to shed excess heat, and at a certain temperature & humidity, losing excess heat becomes impossible through natural means alone. As it happens that temperature is pretty close to your body temperature at a certain humidity level.
lumberjacked@lemmy.world 1 year ago
Uh… I never wondered that till now.
atlasraven31@lemm.ee 1 year ago
Water at about that temperature does feel comfy since water does a great job at transfering heat.
Air is different since it doesn’t transfer heat as well we prefer about 75F.
FuglyDuck@lemmy.world 1 year ago
Not really. Hot Water is relaxing because being warm is relaxing- it loosens muscles and tendons and ligaments while also increasing blood flow (in an attempt to cool off, but it helps with sore muscles by accelerating built up waste,)
But because sweating doesn’t work in a, eventually you’ll over heat and die… eventually. 20min @100-105f is all it can take.
Haus@kbin.social 1 year ago
I'm gonna wonder all day what a 97 degree copper suit would feel like.
Lexam@lemmy.ca 1 year ago
Mine is 97.7, but it used to be 96.6.
bemenaker@lemmy.world 1 year ago
No, your body needs to be able to cool. It’s constantly making heat. You need to be able to cool to maintain 98.
lord_ryvan@ttrpg.network 1 year ago
You’ve got a lot of good answers, but I’m missing one important factor why 98F isn’t comfortable for you…
Your body temperature is too high!
Okay bear with me, please…
As I’m sure you’ve already read, your body being 98F/37C needs to get rid of that heat, as well. Your organs like to be 37 degrees, and your body is used to it being colder than that, so it heats itself up for your organs.Now, what happens if the environmental temperature is usually already around 30-40 degrees?
This happens close to the equator, the whole year, even!Well, then your body heats up much less.
This means someone from Java (right below the equator) has a healthy body temperature of around 36C, while someone from a colder area like Norway has a healthy body temperature of about 37.5 degrees. 1.5 degree may not seem like a big deal, but keep in mind that a 1 degree raise in temperature already means you have a fever!
This is also why my wife, from Southeast Asia, is incredibly cold here in Northwest Europe, and why I couldn’t enter any store in Indonesia during Covid, cause they scanned my body temperature and 37.5C means you’re very sick over there!
TheBananaKing@lemmy.world 1 year ago
Your body is constantly generating heat. If that heat has nowhere to go, your temperature goes up and up.
You need to be in an environment that sucks heat away as fast as you create it - and if the external air temp isn’t cold enough to do that on its own, then you have to rely on evaporation of sweat to help shed the heat.
If that doesn’t cut it, you die.
some_guy@lemmy.sdf.org 1 year ago
It’s the feature that let us become the dominant predator. We could track large game that is wounded until the collapsed from heat exhaustion. Yay sweaty humans!
MoonshineDegreaser@lemmy.world 1 year ago
So are you saying that people who sweat more in hot environments are better suites for long distance hunting? Because I’m a gross, sweaty motorcycle and I would like to feel better about it
Swedneck@discuss.tchncs.de 1 year ago
It also seems like this is part of why there were so many powerhouses around the mediterranean, the climate there is just right that you can work a lot without melting, and warm enough that it’s comfortable to walk basically naked.
And it makes sense when you consider that humans evolved for a comparatively sedate lifestyle (even hunting isn’t going to involve sprinting that much) in subsaharan africa.
MoonshineDegreaser@lemmy.world 1 year ago
I never processed that this is how it works. You just blew my mind