Why kids don’t get as cold as adults do

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Published 2023-02-28
There's a special kind of fat that kids have more of.

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55 degrees in the summer feels colder than 55 degrees in the winter. And 55 degrees as an adult likely feels colder than 55 degrees as a kid. But it’s not just a feeling. It all has to do with how our bodies use fat — specifically brown fat, a lesser-known type of fat that can produce roughly 300 times more heat than any other tissue in the body.

Brown fat isn’t the type of fat that adds to our weight (that’s white fat). Brown fat has the sole purpose of being burnt for heating the body, and it’s extremely effective at that. It only appears in specific parts of the body: around the neck, spine, heart, and kidneys. (It clumps around major blood vessels, in order to warm the blood as it passes through the body.)

But brown fat is temporary and can adapt to pressure in a similar way to muscles. Check out the latest Vox video to learn more!

Note: The headline on this piece has been updated.
Previous headline: Why you get colder as you get older

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All Comments (21)
  • @Vox
    This is the first of a series of videos coming every Tuesday in March, answering questions big and small about the human body. From sight to sound to hormones, subscribe to see more about the weird stuff inside of us. Thanks for watching!
  • @nelsonv741
    I recently turned 70 and am very healthy. As a kid and teen I used to run around in the cold with tee shirts and shorts. That slowly went to the wayside over time. I gained a lot of weight in my 40's and 50's and was always warm. Then I permanently lost over 100 pounds and for a couple of years always felt cold but now it's back to normal. Very informative video. Thanks!
  • @Dr.Kraig_Ren
    "If you remember anything from Biology class, you might know that 'Mitochondria are the Powerhouse of the cell." I am a Neurosurgeon and that's also the only thing I remember from Biology class.
  • @heist4420
    This coming out right when my dad is complaining about how cold it is and I feel hot
  • @mm8436
    This explains a lot. Like how I feel colder in my mid-30s compared to when I was younger (used to never year jackets). Also explains why people from cold climate can tolerate the cold better than people from warm climate.
  • This explains why I never used to get cold. Born and raised in Chicago winters, my legs feel nothing. But after living in LA and Miami for 7 year I'm starting to feel the chill at 30 degrees, I'm an embarrassment to my family
  • @kimberlindy
    Now I know why when I would play outside sometimes my mom would ask me,"Aren't you cold and don't you need a jacket?" I never understood why she would ask this so often.
  • As someone who somehow feels wayyy colder than everyone else and is also a teen, I only really have one thing to say. YOU'RE TELLING ME IT GETS WORSE ?
  • @yukasketch
    Mystery is solved. I remember being annoyed at my mom for forcing me to wear think layers of clothes even though I wasn't feeling cold, but now that I grew up I get cold so easily and wonder how I didn't get cold back then
  • I remember as a child I wouldn’t even need gloves to play in the snow, my hands would stay reasonably warm. Now if the temp in my house drops below 20°C then im freezing and shivering violently!
  • I don’t know what you’ve done to the sound processing on this video but the speech was incredibly clear. I have auditory processing disorder and this was actually a pleasure to listen to. Every word was immediately intelligible.
  • @abc_cba
    Wow, I just realised that I was being rude to my 76 yo father since a few months saying that he feels cold all the time when the world doesn't. Gotta share this video with him and politely apologize. Nice that today is his birthday 🎉
  • 'mitochondria is the powerhouse of the cell' I dont think even dimentia will make me forget that ever..
  • I actually handle the cold better now as an adult than I did as a kid. Partly this is because I was quite thin until I was a teenager. I also hated the cold, being used to the normally hot weather of Mississippi. Nobody had to tell me to put a jacket on until I was in high school, when started to "fill out" and acquire a taste for colder temperatures. Now winter is my favorite time of year, and I regret that it's coming to an end as I write this (it's 84 degrees here today)
  • @rspen2142
    I'm almost 40 years old, and I notice that I get colder a lot faster than I did when I was younger. But, with this being said, it still feels like a sauna in my grandparents house most time. This explains a lot.
  • For two years in highschool I committed to losing weight by skipping the bus and walking/jogging everywhere. It was Wisconsin, and it got really cold. I remember that over time I built up a tolerance and started having to stop and put my coat in my backpack because I was so warm, despite it being 20 F. Then I went to bootcamp, spent time in South Carolina, and upon coming home for Christmas I had to put on 3 layers to stop from shivering all over. I thought it was just me losing my tolerance, but it looks like I unintentionally lost the wrong sort of weight! That's so funny to me.
  • This definitely explains why I'm often times able to chill in -5 degrees in a hoodie while my parents were shivering in heavy coats
  • @demm7777
    I learn much more in these 5 minutes than in an entire month worth of biology lessons in my school.
  • @roboluigi
    Amazing video. I always felt like I would sort of “adapt” to the cold as the winter went on, but never had a realistic explanation as to how this was possible. That was a mystery I never knew how to solve or where to start researching. Now I know