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by sdwr 1418 days ago
A lot of animals bathe/groom. Birds, other primates, cats. Tons of mammals swim as well. Deer, bears, etc (what other animals are there??)

I've noticed that the more I exercise, the cleaner + healthier my skin is. Showers only get me partly there - I need to sweat through a full rinse cycle to get all the funk out.

3 comments

The only reason our sweat even stinks is because of the way it's metabolized by our skin's microbiome. It turns out if you have AOB (ammonia oxidizing bacteria) they can oxidize our sweat and prevent us from stinking

AOBs are found in soils pretty much everywhere. But they're extremely sensitive and can easily be washed away. In contrast, the particular microbes that have closely evolved alongside us to adapt to our skin microbiome often live several layers deep in our skin. When we take a hot shower or soap up we kill them on the surface but, luckily for our skin's health, they can be replenished. However, the AOBs don't have this deep relationship with us because they are not anaerobic. Instead it's likely that we've evolved to expect a constant influx of soil-based bacteria on our skin

Indeed if you look at any other hairless mammals, one of their favorite things is mud baths. Elephant, pigs, rhinos, etc. We're still learning the full extent of how our skin microbiome plays into our health, but the recent research on the gut-brain-skin axis shows it's likely deeply integrated into our evolutionary past

How many mammals actually sweat? I was surprised to learn that dogs don’t sweat, which seems obvious after the fact
Good question. Human sweat _is_ indeed a pretty unique thing. Many animals sweat (e.g. horses, monkeys, hippos, etc). Some animals actually sorta do sweat but it doesn't play as big of a role in their biology as it does in humans. Dogs and cats only sweat in their paws for example

Humans are some of the weirdest hunters because of our incredible endurance. We're pretty slow creatures. If you're an ungulate that just got hit by an arrow, you can easily run away. But a human can keep following you for hours. Some hunter-gatherer groups will keep a persistent hunt going for up to 3 days

So yeah human sweat probably plays a pretty unique role in our physiology compared to most animals, but sweating is definitely not a uniquely human thing. And it's particularly more common in furless mammals

> I've noticed that the more I exercise, the cleaner + healthier my skin is. Showers only get me partly there

Define "cleaner"? What is not clean about your skin that requires exercise to get clean? After every shower, my skin is just "clean"?

My face skin looks way better with regular exercise. Something about the pores + overall tone. I start to notice a difference after 2 sedentary days, and am repulsed by it after a week+ without exercise. I also get a musk coming from my groin that seems to seep through clothes, and is barely affected by showering.

By sedentary I mean full-on jacked-in to the Matrix, 14 hour days on the computer. Someone with a more balanced life will probably experience it differently.

Agreed. The more I exercise, the better I smell.
Interesting. Exercising has positive effects on me, but my skin seems unaffected. (I certainly believe you, though.)
I think he meant 'clearer'.
showers can't get your funk "out" anyway. or do you mean off?