Why does 98° feel hot even though it’s our body temperature?

[hywodena]

And to answer why 90F water feels comfortable, its because water is a good conductor of energy so we can still easily lose our excess heat in 90F water, but in 90F air we need to sweat in order to maintain our temperature. Meanwhile in 70F water we actually lose our heat a bit too quickly, making us cold, even though 70F air is usually comfortable

[limalicious]

My mom laughs when I tell her I get hot after eating. HANK SAYS IT'S NORMAL BECAUSE DIGESTION GENERATES HEAT.

[wherehowwhat]

The "No, its a good question!" Makes me so happy.

[ForeverDyingRainbow]

I’m so glad that Hank became a scientist instead of a politician

[Shawdios]

HANK I WAS WONDERING WHY YOU HAD THAT SONG IN THE BACKGROUND.

You clever bastard

[soulcantspeech]

"you can take me hot to go" how hot, chappell? HOW HOT??

[tired_manatee]

i had only just stopped laughing at the fact that he put H O T T O G O as the background music when he dropped the punchline

[ShaggyDustbin]

As a Floridian I can confirm the humidity will absolutely hijack your ability to sweat properly and you’ll just be swimming through the air like a glitched Gmod npc

[jonathanfruchtnicht]

Hank, thank you sincerely. You've shared the pleasure of learning, and hopefully given the youths something akin to growing up with Bill Nye. God bless, stay sharp! ❤️

[iamthewalrus]

Hank: hot to go
Me: oh, I call it heat exhaustion

[carterhyde]

Some birds function at like 135 degrees which feels mind absurd to me until I remember the flamingos that live in 120 degree deserts.

[VPCh.]

That's also why there are so many heatstrokes in mining. Mines often run at 100% humidity and are hot since they are deep underground.
A 98° day is unpleasantly hot with a low humidity, but you will survive as long as you stay hydrated. But once that hits 100%, there's nothing you can do to cool yourself, you will pass out in a few minutes without external cooling like coolant pipes, coolant suits, or forced air intake.

[andrewobrien]

Hank just described Florida for everyone 😂

[GrimzyShake]

Ugh, thank you hank! I always secretly wonder this at random times and forget to look it up for myself

[RPWhitworth]

Hanks such a good science teacher. Like, i knew all of this but could have never explained it so concisely.

[nicholasmcmahan-watson]

Fun fact: sweat stops doing its job at 100% humidity

[John-eohx]

I thought the song was just a fun tangentially related background noise and then you tied it in at the end. Amazing 😂

[joelharrison]

Hank is a genius Marketer. I feel he is lauded to much as a scientific resource when he’s truly a scientific communicator promoting information. What I love and respect about him is his ability to “sell” science. Did you notice his recent ad for tea that he decided to turn into a non marketed video for the purpose of engagement? He understands we don’t want to be marketed directly and can change his tactics in line with that. 10/10 Hank

[michaelstriker]

Simple, and twofold. Our skin is typically several degrees cooler, thus making higher temperatures more noticeable. And, external 98F is sufficiently warm that radiative cooling doesn't work. This means every minor heat spike that occurs isn't offset. Thus, your body has incentive to give very warm temperatures a higher mental priority.

My experience is more of an outlier, though, as my core is 96.8 (36C) and "hot" is 100+. ("Warm" is 85-99. "Sweltering"(/"too hot") kicks in around 115; but I can take a hot car w/o cooling for 8 mins driving or 15-20 mins dozing.)

[ravelordnito]

Hank fans should know SciShow actually has a video about what happens to the body at high temperatures and high humidity!

It's called Weird Places: Mexico's Crystal Caves.