Human Body Facts for Kids

You are about 1 centimetre taller in the morning because the cartilage between your bones compresses during the day.

Your skin is your largest organ, weighing about 8 pounds and covering nearly 22 square feet.

The longest case of hiccups lasted 68 years — Charles Osborne hiccupped from 1922 to 1990.

Your body contains enough iron to make a nail about 3 inches long.

Everyone dreams every night, but most people forget about 95% of their dreams within minutes of waking up.

Nerve signals can travel through your body at speeds of up to 268 miles per hour.

Babies are born without bony kneecaps — they have soft cartilage that hardens into bone by age 3 to 5.

Your liver is the only organ that can completely regenerate itself — even if 75% is removed, it can grow back.

Every person has a unique body odor, like a scent fingerprint, except for identical twins.

Blood makes up about 7% of your total body weight.