00:00You're out for a couple of miles with an ingrown toenail, ouch!
00:04Now think about those folks who tackle extreme races and marathons.
00:08To run their best, they need top-notch training and solid shoes.
00:13But there's one more thing, perfectly trimmed toenails.
00:18And trust me, keeping those nails in check is an art in itself, because there are many
00:22rules on how to do that right.
00:25To get ahead of nagging toenail issues, some athletes choose to have their toenails removed
00:30all together, which helps them dodge problems like bruising and ingrown nails.
00:35Take Charlotte Vasarely, an ultra-runner who had to say goodbye to both of her big toenails
00:41after relentless pain had been affecting her stride.
00:45The procedure takes about 45 minutes.
00:47A podiatrist will numb the toe, apply a tourniquet, and carefully remove the nail right down to
00:53the root.
00:54They then use carbolic acid to stop it from growing back.
00:59Recovery is pretty swift, but sometimes it can take a few tries to ensure the nail is
01:03completely gone.
01:04Now let's say you've accidentally lost your toenail.
01:08And since you aren't a professional athlete, you decide to help it grow back.
01:13It will take you up to one and a half years to fully recover.
01:18They grow three times more slowly than fingernails, only pushing around 1.6 millimeters a month.
01:24Plus, the older we get, the slower the process gets.
01:28With age, our toenails thicken and round out, so the growth rate slows down.
01:34It's not that everybody's feet smell bad, but if you ever notice someone's tootsie stink,
01:38here's an explanation for you.
01:41Our feet have around 250,000 sweat glands.
01:44For comparison, our armpits have 10 times fewer, only around 25,000.
01:50However, it's not the sweat that makes the feet smell.
01:55Bacteria are in charge of the stench.
01:57The primary reason is oftentimes lack of ventilation and fungus that thrive in wet environments,
02:04such as sweaty feet.
02:07Farts and burps are just a normal part of being human.
02:11When we chow down, our small intestines don't get around to digesting all foods perfectly,
02:16and gas is a byproduct of a digestive process, when bacteria break down leftovers in your gut.
02:23All that gas eventually has to escape, which means, on average, we let out about 12-25
02:29farts a day.
02:31And don't worry, holding in gas won't affect you seriously.
02:34Sure, it can lead to a bit of tummy trouble, but being polite at dinner won't mess with
02:39your health in any serious way.
02:42Gross as it is, pus actually tells you that your body is doing its job.
02:47That gooey stuff, whether it's white, yellow, green, or even brown, is just a buildup of
02:53white blood cells fighting off an infection.
02:56It means your immune system is kicking in like it should.
03:00Of course, if you see pus after major surgery, that's a flag to reach out to your doctor.
03:05For smaller injuries, pus is just your body's way of healing, even if it's super yucky.
03:11You can even call it the white cell's precious juice, if you will.
03:16Can you give yourself a pinch without feeling anything at all?
03:19Go ahead, grab a bit of skin on your elbow and give it a good squeeze.
03:23Surprisingly, it won't feel as bad as you'd think.
03:27That's because different spots on your skin have different kinds of nerve endings.
03:31Your elbow skin is like the superhero of skin – it's tough and has fewer pain receptors.
03:37On the flip side, the more delicate parts of your body are packed with nerve endings,
03:41making them sensitive and a bit more scream-worthy when you accidentally bump into something.
03:47You can munch on anything without actually tasting it.
03:50All you have to do is pinch your nose and take a big bite of that not-so-appetizing
03:54meal.
03:55Bet it doesn't taste like much!
03:57The thing is, our taste buds only detect five flavors – sweet, sour, bitter, salty,
04:03and that savory umami – the flavor you get from various types of meat.
04:08Still, it's not your tongue but your sense of smell that really brings the flavor party
04:12to life.
04:14If you hold your nose, you cut off the aroma and leave your brain to rely only on those
04:19five basic tastes.
04:21That's a great life hack when you gotta eat something you don't like but have to.
04:27If you're snoozing away and someone blows a puff of air at your eyes, they won't even
04:31budge.
04:32But if you're awake, your eyes are gonna flutter like crazy!
04:36So next time you want to test if someone's really sleeping or not, try this little trick.
04:42You might notice that one nostril feels more stuffed up when you have a cold, but that's
04:47completely normal.
04:48It's not unusual for one nostril to be more active while the other takes a little break,
04:52and they actually switch roles throughout the day.
04:55This is known as the nasal cycle.
04:58Typically, one nostril does about 75% of breathing for a couple of hours before the other one
05:04takes over.
05:06Since this cycle is controlled by your body's nervous system, you can enhance this natural
05:10pattern by consciously switching nostrils with each breath, which can help you relax.
05:16It might seem a bit goofy at first, but it could be a fun trick to get your kid to try
05:20when they need to calm down.
05:22The bones in your feet account for about 25% of all the bones in your body.
05:28There are 206 bones in total, and each foot has 26 of them, so that's 52 bones for your
05:34two feet combined.
05:36If you do the math, that's roughly 25.24% of your total bone count!
05:42Genetically, humans are like 99.9% the same.
05:47But not all of our genes are actually human.
05:50Out of the roughly 20,000 genes in our DNA, about 8% come from ancient viruses.
05:56Plus, another 40% is made up of repetitive sequences that scientists think might also
06:03be viral.
06:05These viral genes have the ability to move around and replicate themselves, which could
06:10be linked to some health conditions.
06:12So turns out you're barely half-human when it comes to your genetic makeup.
06:18Believe it or not, it's rare, but some people can actually grow teeth in their ovaries!
06:24These weird growths are called teratomas, and they can contain all sorts of stuff like
06:28hair follicles, skin, muscle, and more!
06:32The biggest teratoma ever recorded was a whopping 18 by 10 inches, and it was taken out of a
06:3974-year-old woman!
06:41Since the brain doesn't have pain receptors, doctors can do brain surgeries with patients
06:46awake and sometimes even chatting.
06:49It might sound like a scene from a horror movie, but having patients alert during the
06:53procedure actually helps surgeons avoid causing any serious harm.
06:58It's a bit unsettling to think about, though.
07:01Surprise!
07:02Your brain is the fattiest organ in your body.
07:05It's about 60% fat, and that's a good thing.
07:08Those fatty acids are essential for optimal brain function.
07:11Imbalances could up your risk for many health issues.
07:14Still, when it comes to having kids, your seemingly fat brain gets smaller as if it's
07:19on a diet.
07:20Moms and dads experience shrinkage in areas tied to social cues and decision-making.
07:26These changes are totally normal and help with parenting.
07:30However, no matter if you have kids or not, your brain power still declines by the time
07:34you hit 24.
07:36Studies show that cognitive speed starts to drop, and you keep losing about 15% every
07:4215 years after.
07:44So if you're nearly 40, don't be surprised if things take a bit longer to process.
07:49Your ring finger can give away your marital status, but it also has some interesting secrets
07:53even before you tie the knot.
07:56Back in 1998, evolutionary biologist John Manning found out that if your ring finger
08:01is longer, it might mean you had higher levels of prenatal testosterone.
08:07Since then, several studies have backed this up, showing that folks with longer ring fingers
08:12tend to excel in sports.
08:14If you've just checked your palms and your fingers are really long, don't be too fast
08:19to judge.
08:20Not all scientists agree with that.
08:22However, there's some proof that men with longer ring fingers can be a bit angrier than
08:26other people.
08:27Maybe that's why boxing gloves resemble mittens – to keep you guessing about who the real
08:32champ is!
08:33That's it for today!
08:34So hey, if you pacified your curiosity, then give the video a like and share it with your
08:39friends!
08:40And if you want more, just click on these videos and stay on the Bright Side!
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