25+ Surprising Facts about the Human Body
Your eyeballs are the same size as when you were a baby, but your nose and ears love growing bigger as you get older which is among the interesting facts about the human body.
The swirly patterns on your fingertips tell everyone who you are. No one else has the same ones – they’re your unique superpower!
Most people have one lung that’s a bit smaller, so their heart has plenty of room. Our hearts are strong enough to pump blood all over our giant circulatory system!
When you get shy or embarrassed, your cheeks heat thanks to tiny blood vessels working overtime. Now, everyone knows you felt a certain way.
Our skin may keep water away, but we have special sweaty helpers at the base of each hair. When it’s hot out, they work hard to keep us from melting into puddles!
Your teeth formed under your gums before you were even in mommy’s tummy. When you’re born, some babies already have tiny teeth waiting to come in!
It takes about seven years for all your hair cells to be replaced – almost as long as you’re in elementary school! New hairs grow at a super slow half-inch per month.
One finger is longer for most boys, but it’s usually the other way for girls. Your hands are unique works of art which makes them surprising facts about the human body.
Humans are the only ones who can spot themselves in a mirror. When other animals look, they see a silly creature looking back and don’t realize it’s them!
You leave behind a thin layer of skin every half hour as new skin replaces the old. By brushing your pearly whites, you’ve already moulted like a snake!
Rarely do some notable people have extra nipples or ones in funny places. They don’t cause problems and make you unique! Check facts about English language.
Your pupils change shapes in different light like squishy ink blobs. They help your eyes gather just the right amount to see perfectly.
Our outer ears capture sounds and travel them through the ear canal. They wake up our brains to the noisy world around us!
The fantastic brain takes up a fifth of your body’s energy, even at rest. It’s three pounds of pure genius that lets you learn and play every day!
Knees take quite a while to mend when they get hurt. About six weeks is typical, but with rest, they’ll be leaping again in no time!
Smiling only takes seven muscles, but frowning requires more than 40 muscles. So being happy is way easier on your face, a healthy fact about human body.
Fingernails and toenails slowly grow about 1/100th of an inch per day. It takes around six months for them to be wholly replaced from cuticle to tip.
With its wiggly bone, your tongue is the strongest and most limber. It lets you taste, talk and gobble up yummy foods!
Each of us carries 2-6 pounds of busy bacteria in our guts to break down food and boost our immune troops. They’re our petite poop paladins!
Your eyes dart around 100,000 times each day so retinas can focus on what you look at. This lets you scan for snacks, friends and fun!
Kidneys have tiny filters called nephrons that scrub around 200 litres of blood daily, plucking out toxins like a pro. No wonder they work so hard!
By age 60, most people lose over half their taste buds. That’s why grandmas add extra zing – flavours aren’t as zippy!
White matter in the brain wraps nerve fibres like insulation on wires. This turbocharges signals between brain cells.
Food digestion doesn’t stop in the tummy. It keeps breaking down through your 20-foot-long twisty intestines, ending in the colon.
You started with around 300 bones, but many fused as you grew up. Now, adults have 206, including 26 in hands and feet!
The powerful pump in your chest propels enough blood in a lifetime to fill over 1,000 pools! It works hard every second.
That “crack” sound from joints isn’t snapping bones – miniature gas bubbles popping like water balloons! The gases are medical-grade oxygen and nitrogen.
Blood zips around your body in only 20 seconds through the ingenious circulatory system highway. It never stops to refuel!
When frightened, stress chemicals prepare your muscles for fight or flight. Your heart races and your muscles feel stronger to handle dangers bravely.
Skin gets strength and stretchiness from its dermis matrix laced with elastic and collagen fibres in every direction is one of the coolest facts about human body. Not even Frankenstein’s monster tears as easily!
The average sneeze blows out air over 100 mph, thanks to the built-up of extra pressure in the closed vocal cords. This shoos germs from the nose to keep the lungs safe and clear.
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