Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
You can't tickle yourself.
29
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
In one day, adult lungs move about 10,000 litres of air.
11
A person can live without food for about a month, but only about a week without water.
156
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Every human spent about half an hour as a single cell.
144