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 your DNA was stretched out it would reach to the moon 6,000 times.
256
Within three days of death, the enzymes that once digested your food begin to eat you.
22
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199