Every human spent about half an hour as a single cell.
144
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
In one day, adult lungs move about 10,000 litres of air.
11
Mushrooms are more closely related to humans than they are to plants.
47
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Tigers can see 6 times better at night than humans.
305
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127