People will often say they know something “like the back of their hand” to indicate that they’re familiar with it top to bottom.
But how much do you actually know about your own body?
We’ve got 16 tidbits that may surprise you.
Don’t stick out your tongue if you want to hide your identity!
As like finger prints, your tongue has a unique print too
Your pet isn’t the only one in the house with a shedding problem.
Humans shed about 600,000 particles of skin every hour. That works out to about 1.5 pounds each year, so the average person will lose around 105 pounds of skin by age 70.
An adult has fewer bones than a baby.
We start off life with 350 bones, but because bones fuse together during growth, we end up with only 206 as adults.
Did you know that you get a new stomach lining every three to four days?
If you didn’t, the strong acids your stomach uses to digest food would also digest your stomach.
Your nose is not as sensitive as a dog’s, but it can remember 50,000 different scents.
The small intestine is about four times as long as the average adult is tall.
If it weren’t looped back and forth upon itself, its length of 18 to 23 feet wouldn’t fit into the abdominal cavity, making things rather messy.
The air from a human sneeze can travel at speeds of 100 miles per hour or more — another good reason to cover your nose and mouth when you sneeze — or duck when you hear one coming your way.
By 60 years of age, 60-percent of men and 40-percent of women will snore. But the sound of a snore can seem deafening.
While snores average around 60 decibels, the noise level of normal speech, they can reach more than 80 decibels.
Eighty decibels is as loud as the sound of a pneumatic drill breaking up concrete. Noise levels over 85 decibels are considered hazardous to the human ear.
Hair Color and Count
Blondes may or may not have more fun, but they definitely have more hair.
Hair color determines how dense the hair on your head is, and blondes (natural ones, of course), top the list. The average human has 100,000 hair follicles, each of which is capable of producing 20 hairs during a person’s lifetime.
If you’re clipping your fingernails more often than your toenails, that’s only natural.
The nails that get the most exposure and are used most frequently grow the fastest. Fingernails grow fastest on the hand that you write with and on the longest fingers. On average, nails grow about one-tenth of an inch each month.