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
If you are bitten by a poisonous snake, and fail to receive medical attention, you still have a 50% chance of survival.
28
Every time you sneeze some of your brain cells die.
113
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
Pain travels through the body at 350 feet per second!
23
When you take a step, you are using up to 200 muscles.
885
25% of your bones are located in your feet.
12