14 Unknown Facts About Human Body Which Your Teacher Never Told You

The stomach’s digestive acids are strong enough to dissolve zinc. Fortunately for us, the cells in the stomach lining renew so quickly that the acids don’t have time to dissolve it.

The largest organ in the body is the skin. In an adult man it covers about 1.9m2 (20sq ft).

The focusing muscles of the eyes move around 100,000 times a day.

The brain is more active at night than during the day. Scientists don't know yet why this is.

The nail on the middle finger grows faster than the other fingernails.

Women's hearts beat faster than men's.

Men get hiccups more often than women.

The largest cell in the body is the female egg and the smallest is the male sperm.

If your saliva cannot dissolve or mix with food, you will not be able to taste that food

By age 60, most people will have lost half their taste buds.

We are about 1cm taller in the mornings than in the evenings.

The strongest muscle in the body is the human tongue.

Humans are the only species that produce emotional tears.

 It is impossible to kill yourself by choking yourself with your hands.