In one day, adult lungs move about 10,000 litres of air.
11
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Our Right Lungs takes more air than our left lung.
194
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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 human brain doesn't stop developing until about 25 years old.
102