What’s that smell?
Turns out, it’s P.YOU.
Body odor starts with sweat,
but your perspiration itself isn’t what stinks.
Humans have two kinds of sweat:eccrine and apocrine.
Apocrine is the one that fuels body odor.
它分泌出浓稠 油腻 富含脂质的液体
It’s a thick, oily fluid made up of fatty compounds,
and secretes from the groin and armpits.
Your skin’s microbiome-
各种存活的细菌 真菌 还有病毒——
bacteria, fungi, and viruses living on you right now—
LOVE to eat those compounds.
As they chomp away,
the molecular leftovers cling to you and your clothes,
and THAT is your B.O.
While your apocrine sweat may cause the smell,
eccrine sweat helps spread it around.
Unlike apocrine sweat,
eccrine sweat is watery and your body makes a lot of it.
Those apocrine compounds are carried by eccrine sweat all over your body,
and onto your clothes.
It turns out the type of material you’re wearing
will influence how much you smell.
Cotton is hydrophilic, meaning it easily absorbsand holds onto water.
That’s why cotton t-shirts get heavy when you sweat while wearing them.
That warm, wet environment is great for bacteria to grow,
even after you stop sweating andtake off your shirt.
In fact, the longer your sweat lingers oncotton clothing (even in your hamper),
the smellier it’ll get.
But, cotton’s hydrophilic properties also have an advantage.
When you wash them, the smells come out pretty easily.
That’s unlike polyesters or so-called “dry wick” materials.
Polyester is hydrophobic and oleophilic.
It quickly gets rid of water, but holds onto oils.
所以 健身过程中 当你的汗液快速蒸发掉
So, while your sweat evaporates quickly and
your clothes stay light as you work out,
the apocrine compounds cling to the material’s fibers for dear life.
Even after a cycle in your washing machine, those oily bits remain.
So, your freshly-washed workout top
could stink up the gym within minutes of starting workout,
as those stuck-on secretions mix with your skin’s microbes.
There are some odor-producing factors that you simply can’t help,
like your age.
Older folks tend to produce fewer lipids, so malodorous bacteria have less food.
But barring the creation of time travel,
here’s what can you do to avoid stinking up wherever you go:
#soap and water make you cleaner than you used to be#
First and foremost: practice regular hygiene.
A little soap and water can go a long way.
Diet can play a role, too.
Eating more fruits and veggies and less meat and fast food
can result in fewer lipids in your sweat and on your skin
Again, that means less fuel for odor-causing bacteria.
Shaving your armpits can also have temporary benefits
by taking away skin and lipids,
but not if you do it every day.
Finally, consider cleaning your washer.
Run it without any clothing inside on the highest water temperature
with an appropriate disinfectant.
This will help eliminate any bacteria that might be stuck there.
And when you do finally wash your clothes, use a specially-formulated laundry detergent.
Many popular brands have “sport” versions specifically designed
to help remove apocrine compounds from your wardrobe.
There are also extreme steps,
like transplanting your armpit microbiome with someone else’s,
and one day scientists could even use other bacteria to combat the malodorous ones.
But for now, just wash yourself, and your clothes, to stay smelling fresh.
#When you get rid of B.O.#
#When you get rid of B.O.#
#You’ll smell sweet.#
#Yes, sweeter than you used to be when you get rid of B.O.#