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Amazing facts about your body you didn't know about
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00:04It takes about a month for all the skin cells to renew.
00:08We shed about 30,000 dead cells every 60 seconds,
00:12losing about 9 pounds of skin every year.
00:15So, when your friends call you flaky, they're not entirely wrong.
00:19Our fingernails grow way faster than toenails.
00:22The latter grow almost 4 times slower
00:24because they're less frequently damaged than fingernails.
00:27Even though we often stumble on them,
00:30sudden circulation bursts usually doesn't last long.
00:33An eyelash is only here to stay for 150 days.
00:37The world eyelash record was about 3 inches long.
00:41They're also home for tiny mites.
00:43We blink about 4,200,000 times a year,
00:47at least once every 8 seconds.
00:49When we sneeze, the air that we blow speeds out at 100 miles per hour.
00:54It could accelerate faster than a brand-new Ferrari.
00:57Also, you could fracture a rib if you sneeze too hard.
01:01Depending on the person, a human produces from half a quart to a full quart of saliva every single day.
01:09That's enough saliva to fill several bathtubs in a year.
01:12No spit.
01:13Saliva acts as a perfect remedy.
01:16Wounds in our mouth heal way faster than elsewhere.
01:18It also helps to taste food.
01:20Our taste buds are ready to perceive it only when it's dissolved in saliva.
01:25Now, it may sound crazy, but our bones are stronger than they seem.
01:29A cubic inch of human bone can bear about 19,000 pounds,
01:34making it 4 times stronger than concrete.
01:37The only thing that makes our blood type different is sugar.
01:41AB and AB types have 5 types of sugars,
01:44while O has only 4, which makes it perfect for donors.
01:48Lack of additional sugar doesn't make O type less sweet.
01:51In fact, it attracts mosquitoes even more than other blood types.
01:55People have only 8 blood types, while cows have 800 and possibly more.
02:02Usually, we shed about 50 to 150 hairs a day.
02:06An average lifespan of a hair is 5 years,
02:09and as soon as an old hair says goodbye to your scalp,
02:13a new one starts growing immediately.
02:15A human hair is stronger than the same diameter copper wire.
02:19A single hair can hold up to 3.4 ounces of weight,
02:22and if used properly, a full head can hold up to 18,500 pounds.
02:29Our stomach is bigger than it may seem with a capacity of nearly half a pound when needed,
02:34while the average is around 32 ounces.
02:36The food is digested within 4 to 6 hours,
02:39and it can also dissolve metal, so capacity matters.
02:44Lips are much more sensitive than fingers,
02:47having around a million nerve endings.
02:48They are 100 times as sensitive as the tips of fingers.
02:53Grooves and furrows make our lip print unique,
02:56just like fingerprints are.
02:58They also remain unchanged throughout our life.
03:01Tongue print is unique too, by the way.
03:04So, when are we gonna see a tongue print reader?
03:07Our belly buttons have an entire zoo in them,
03:09with a range of about 70 different bacteria.
03:12Some of them can also be found in soil in Japan,
03:15and even several kinds of bacteria typical for polar ice caps.
03:20Our bodies actually glow.
03:22Now, we can't see that with the naked eye, though,
03:24because the light we emit is 1,000 times less intense
03:28than the minimum level we can perceive.
03:31Humans are the only living things on Earth
03:33that can actually blush, or need to, according to Mark Twain.
03:37Blushing is provoked by an adrenaline rush.
03:40Carmine, used in blushes and lipsticks,
03:43is red dye made up of ground-up beetles.
03:47Ew!
03:48Your ears keep growing throughout your life.
03:51They do sweat too,
03:52and earwax is actually the kind of sweat they produce.
03:56By the way, your nose never stops growing either.
03:59Your heart is the only muscle that never gets tired.
04:03The aorta is massive.
04:05Its diameter is almost as large as a hose in your garden.
04:09We emit about 16 to 48 ounces of gases every day,
04:14which is enough to fill a small balloon.
04:16Okay, you can insert the appropriate sound effect here.
04:20Good job.
04:21Fat helps our bodies consume vitamins.
04:24Such vitamins as A, D, K, and E
04:28can be properly absorbed only when they're dissolved in fat.
04:31Our bodies have enough fat to produce 7 bars of soap.
04:36Blackheads made of sebum aren't black because they're dirty.
04:39They get dark because the debris is oxidized.
04:43Some parts of your brain can eat up their own neurons and proteins
04:46if you don't provide enough sleep.
04:48For example, the hypothalamus that's responsible for your sleep,
04:53hunger, and body temperature can do that.
04:55You can't inhale and swallow at the same time.
04:59I know you've just tried it.
05:01That thing called a pharynx is used as an air passage when you inhale
05:05or as a food passage when you swallow.
05:08When we're awake, our brain may produce enough energy
05:12to turn an electric bulb on.
05:14It generates about 10 watts of power.
05:16You carry enough bacteria in your body to fill a can.
05:21Bacteria make about 3 to 5 pounds of your weight,
05:24representing 2% of our total weight.
05:27Still, most of them are the waste that our body has.
05:31The normal body temperature is considered to be
05:33at a range of 97 to 99 degrees Fahrenheit.
05:37The highest fever ever recorded was a critical 115 degrees.
05:42Oh, and that person survived.
05:44The pinky finger may be the smallest one,
05:47but it's the strongest one, too.
05:49It has 50% of all strength of your hand.
05:53A human has about 20,000 to 25,000 genes.
05:57Still, Cornflakes have more genes than we do.
06:00Luckily, it's about sophistication,
06:02not the quality this time.
06:04Cornflakes 1, human 0.
06:07The iron our bodies have is enough to produce 3 nails,
06:11each 1 inch long.
06:13The carbon that we have can be used for 900 pencils.
06:17Your liver has a superpower of growing back removed parts.
06:20It can regenerate to the original size
06:23from as little as a quarter of itself.
06:26The coolest camera so far has 400 megapixels.
06:30A human eye has 576.
06:33That's why the sunsets are so much better in real life
06:36than in the photos.
06:37A rollercoaster actually tosses your organs around.
06:41When you feel as if your stomach's turning over,
06:44it might actually be the case.
06:46Even though every person on Earth
06:48has an absolutely unique smell,
06:51identical twins smell exactly the same.
06:53It must be because they have identical genes.
06:57Almost half of your taste buds will have gone away
07:00by the time you turn 60.
07:02Your sense of smell gets less acute as you get older, too.
07:06When you cough,
07:07you release the air at about 60 miles per hour.
07:10Turnips can be a great remedy for cough.
07:12Just slice them and add some honey on top.
07:15A tablespoon three times a day is enough.
07:19Our skin is the biggest organ that we have.
07:22It's also one of the heaviest organs,
07:24weighing up to 9 pounds.
07:26Hiccups is a two-step process.
07:28First, you inhale a lot of air
07:30because of a muscle spasm,
07:31and then, bang, the airways are closed,
07:34the air is blocked,
07:35and the famous sound goes inside.
07:39We don't smell when we sleep.
07:41That's why it's almost impossible
07:42to notice a gas leak at night.
07:44While sleeping, we can only rely on sound.
07:47Well, actually, we can technically smell while we sleep,
07:51but normally, a good shower can eliminate that.
07:54Out of all the senses we have,
07:56smell is the most acute one.
07:58We remember 65% of smells after a year,
08:01but only 50% of things we've seen
08:03over the last three weeks.
08:05We also get a new nose every 28 days
08:08because nose cells are renewed every four weeks.
08:11As for taste, again,
08:13we mostly rely on our smell
08:15since it helps us perceive up to 95% of the flavor.
08:19Without our smell sense,
08:20it'd be hard to tell an apple from a turnip.
08:23While a bunch of flowers may be fragrant for you,
08:27there are people who suffer from cacosmia.
08:29They always seem to smell something unpleasant,
08:32even if there's nothing like that around.
08:35We need ears,
08:37not only for hearing,
08:38but for balance, too.
08:40Our vestibular system occupies the inner ear.
08:43Canals in your inner ear contain fluid
08:45and tiny hair-like sensors
08:47helping you keep your balance.
08:49If you have red eyes in a photo,
08:52blame it on bouncing light.
08:53The flash jumps off the blood vessels
08:56at the back of your eyes,
08:57creating that effect.
08:59All the bones in your body
09:00are connected to each other
09:02except for the hyoid.
09:04This bone serves as a support to your tongue,
09:06and it's one of the rarest bones to break.
09:10There's a woman from Norway
09:12named Karina who can fly.
09:14Well, almost.
09:15She is a base jumper.
09:17That's a recreational sport
09:19where people jump from fixed objects
09:21with a parachute.
09:22Base stands for four categories
09:24of fixed objects you can jump from.
09:26Those are buildings,
09:28antennae,
09:29which refers to radio masts and towers,
09:32spans,
09:32which are actually bridges,
09:34and earth,
09:35which means cliffs.
09:37You have to admit,
09:38leaping off cliffs
09:39to earn a living
09:39does sound cool.
09:42Karina wears something
09:44known as a wingsuit.
09:45We're talking about
09:46a full-length jumpsuit
09:48that has additional fabric
09:49under the arms
09:50and between the legs.
09:51That way,
09:53base jumpers can experience
09:54the feeling of flying,
09:56even if it's just a few seconds
09:58before they have to deploy
09:59their parachute
10:00when they see it's time
10:01to slow down their fall.
10:03Karina has made
10:04over 400 jumps already,
10:06which seems like a lot of seconds
10:07of flying and feeling
10:09like a superhero
10:09with superpowers.
10:12Some people can fold their tongues,
10:15and some can wiggle their ears,
10:17and some, it seems,
10:18can dilate and constrict
10:20their pupils
10:21whenever they want.
10:22No one thought
10:23it was possible
10:24to enlarge and shrink pupils
10:25by directly controlling them
10:27as if they were muscles.
10:28That is,
10:29until one student
10:30from Germany,
10:31known by the initials
10:33DW,
10:34showed how he changes
10:35the size of his pupils
10:36on demand.
10:37He actually said
10:38he has been showing a friend
10:40how he could
10:40tremble his eyeballs,
10:42and the friend then noticed
10:44his pupils
10:44had become smaller.
10:47DW realized
10:48he had such a cool ability
10:50after playing computer games
10:52for long periods of time.
10:53He said that
10:54constricting the pupil
10:55felt a bit
10:56as if you were gripping
10:57or tensing something.
10:59At the same time,
11:00when you want to make
11:01your pupils bigger,
11:02it feels as if
11:03you're relaxing your eye.
11:04This sounds like
11:05something I could try
11:06before I go to sleep tonight.
11:08And what's even more awesome
11:10is that he said
11:11he could actually feel
11:12the muscles in his pupils.
11:15A man named Daniel
11:17is blind,
11:18but he can still see.
11:20He doesn't see
11:21with his eyes,
11:22but he's managed
11:23to tune his hearing
11:24so finely
11:25that he can ride his bike
11:27even through heavy traffic.
11:28He can do
11:29many other things too.
11:31For example,
11:32go camping alone.
11:33dance
11:34and climb trees.
11:35His superpower
11:36is something
11:37we call echolocation.
11:39To orient himself,
11:41Daniel clicks his tongue.
11:42The sounds he makes
11:44bounce off
11:44the objects
11:45surrounding him.
11:48Echolocation
11:49is the very technique
11:50dolphins,
11:51bats,
11:51and beluga whales
11:52use to orient themselves
11:54and navigate
11:55their surrounding.
11:56Daniel has gotten
11:57so good at getting around
11:58using his superpower
11:59that even other
12:01blind people
12:02hire him
12:02to help them
12:03get around.
12:06Stephen
12:06is a British artist
12:07with an awesome
12:08photographic memory.
12:10He memorized
12:11and later drew
12:12Rome,
12:13Tokyo,
12:13Dubai,
12:14Hong Kong,
12:15and New York
12:16city skylines.
12:17All it took him
12:18to draw so many
12:19sophisticated
12:20and insanely accurate
12:21details of these places
12:22was a single
12:23helicopter ride
12:24over each city.
12:26When he was working
12:27on the panoramic
12:28picture of Rome,
12:29he drew the exact
12:30number of columns
12:31of the Pantheon.
12:34You know how
12:35some of your early
12:35memories
12:36sometimes feel
12:37so vivid?
12:38Imagine you could
12:39recall your whole life
12:40with the same intensity.
12:42A woman from Australia
12:43can remember
12:44literally
12:44every minute
12:45of every day.
12:46And it's not like
12:47she remembers
12:48blurry details,
12:49wondering if that
12:50even happened.
12:51She remembers
12:52everything
12:53down to the
12:53finest detail.
12:55You can just
12:55tell her a random date
12:56and you'll hear
12:57what that day
12:58in her life
12:59looked like
12:59since her brain
13:00is not able
13:01to forget anything.
13:04There's a man
13:05who simply
13:06doesn't stop running.
13:08Men's fitness
13:09gave him the title
13:10of one of the
13:10fittest men
13:11on the planet.
13:12He's a true
13:13superhero
13:14considering his stamina.
13:16He has submitted
13:17himself to some
13:18of the most mentally
13:18and physically
13:19challenging
13:20athletic tests
13:21you can only imagine.
13:22For example,
13:23he's managed
13:24to complete
13:25a 350-mile run.
13:27Impressive?
13:28Well,
13:29here's something
13:30even better.
13:30He didn't stop once,
13:32not even to sleep.
13:35There's also
13:36his sweltering
13:36sprint
13:37through the insane
13:38heat of Death Valley.
13:40Imagine running
13:41outside
13:41at 120 degrees
13:42Fahrenheit.
13:43One of his
13:44achievements
13:45is a marathon
13:45to the South Pole.
13:47The temperatures
13:48there can drop
13:49to negative
13:4940 degrees
13:50Fahrenheit.
13:51This real-life
13:52Forrest Gump,
13:53but with better
13:54stamina,
13:55has built
13:55quite an impressive
13:56running resume.
13:57But he still
13:58looks for new
13:59ways to challenge
14:00his body
14:00and mind.
14:01For instance,
14:02this super runner
14:03has recently
14:04finished 50 marathons.
14:06It was one
14:06in each state,
14:08and it took him
14:0850 days in a row
14:10to do that.
14:12You may have
14:13heard of
14:13Wim Hof,
14:14a Dutch
14:15motivational speaker
14:16who is able
14:16to withstand
14:17extremely low
14:18temperatures.
14:19He uses a special
14:21meditation technique
14:22to keep the
14:23temperature of his
14:23body steady
14:24while enduring
14:25freezing conditions.
14:26He's even earned
14:28the adequate nickname
14:29for that,
14:30Iceman.
14:32Hof has completed
14:33a couple of marathons
14:34and climbed
14:35Mount Kilimanjaro
14:37in extremely low
14:38temperatures,
14:38and all he wore
14:40was a pair of shorts.
14:41He has set 20
14:42world records
14:43when it comes
14:44to cold endurance.
14:45That includes
14:45the record
14:46for the longest
14:47ice bath,
14:481 hour,
14:4913 minutes,
14:50and 48 seconds.
14:51Brr,
14:52I'm freezing
14:53just talking about it.
14:54Let me grab my
14:55blanket before I
14:56move on.
14:58This 54-year-old man
15:00is called
15:01the French Spider-Man.
15:03He's famous
15:04for his urban
15:05climbing feats.
15:06It seems so easy
15:07when you're watching
15:08him scale
15:09multi-story
15:09buildings in broad
15:10daylight.
15:11He doesn't carry
15:12any safety equipment
15:13that can keep him
15:14from falling.
15:15But even without
15:16all that,
15:17he still climbs
15:18hundreds of feet
15:19into the sky.
15:21He's visited
15:22some famous spots
15:23and climbed
15:24the Empire State Building,
15:26the Eiffel Tower,
15:27the Canada Square Tower,
15:28the Four Seasons Hotel
15:29in Hong Kong,
15:30and the Patronus Towers
15:32in Malaysia.
15:33Urban climbing
15:34is not illegal,
15:35but he has been
15:36arrested more than
15:37100 times
15:38for causing
15:39public disturbances.
15:41Wow.
15:41Still a superpower,
15:43but I'd personally
15:44skip on this one.
15:46Next.
15:47A couple of years ago,
15:49a story about a man
15:50who could survive
15:51without water and food
15:53traveled around the world.
15:54He claimed that
15:56he hadn't eaten
15:56since 1940.
15:58Researchers were
15:59very curious
16:00about this case,
16:01so they placed him
16:02in a room
16:03for 10 days
16:04to observe him.
16:05But the mystery
16:05remained unsolved
16:06because he went
16:08out of that room
16:08perfectly healthy,
16:10even though they
16:10didn't give him
16:11any water or food.
16:14This man from Malaysia
16:16is some sort of
16:17tooth king.
16:19He has pulled
16:20a seven-car train
16:21using a steel rope,
16:23but he didn't
16:23use his arms.
16:25One end of the rope
16:26was tied to the train,
16:27whereas the other one
16:28was between his teeth.
16:30This man holds
16:31a Guinness record
16:32for this amazing ability
16:33no one can really explain.
16:35The toothpaste commercial
16:36should definitely hire him.
16:39How about a lion whisperer?
16:41Imagine speaking
16:43to the king of the jungle
16:44and being able
16:45to befriend
16:46this wild animal.
16:47It sounds like
16:48a real superpower,
16:49but one man
16:50can actually tame
16:51and speak to these big cats
16:53without any particular effort.
16:55No matter whether
16:56we're talking about
16:57a scary lion
16:58or a ferocious cheetah,
16:59he becomes friends
17:01with them
17:01and then makes them
17:02dance to his tunes.
17:04His superpower
17:05quickly turned him
17:06into a hero
17:06among wildlife enthusiasts.
17:10It's time to meet
17:11Daniel the Rubber Boy.
17:13Daniel is,
17:14as far as we know,
17:15the most flexible man
17:16in the world.
17:17He can roll up
17:19like a ball,
17:19and this helped him
17:21become a five-time
17:22Guinness record holder.
17:23When you see him
17:24showing his special skills,
17:26you can't help but wonder
17:27where the bones
17:28in his body go
17:29when he's bending like this.
17:32He discovered his talent
17:34at an early age.
17:35He would just jump off
17:36the top bunk bed
17:37and, to the amazement
17:38of his family members,
17:40land in a straddle split.
17:42But his career began
17:43years later
17:44when he started
17:45performing in the streets.
17:46He would be divided
17:46years later
17:46peace of Hisium.
17:46He would
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