Our eyes blink around 20 times a minute. That’s over ten million times a year 

Our ears never stop growing

Earwax is actually a type of sweat 

The tongue is covered in about 8,000 taste-buds, each containing up to 100 cells helping you taste your food 

You produce about 40,000 litres of spit in your lifetime. Or to put it another way, enough spit to fill around five hundred bathtubs – yuck!