An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
It takes approximately 12 hours for food to entirely digest.
93
The human eye blinks an average of 4,200,000 times a year.
233
A human being loses an average of 40 to 100 strands of hair a day.
133
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
On average, there's 100 billion neurons in the human brain.
83
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307