There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
There are about 1,400 different species of bacteria in your belly button.
10
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
The average person's skin weighs twice as much as their brain.
131
In one day, adult lungs move about 10,000 litres of air.
11