Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Enamel is hardest substance in the human body.
61
On average, there's 100 billion neurons in the human brain.
83
It takes about 20 seconds for a red blood cell to circle the whole body.
102
You forget 90% of your dreams.
256
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Every human spent about half an hour as a single cell.
144