After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
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
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The human brain doesn't stop developing until about 25 years old.
102
One human hair can support 3 ounces.
191
A human being loses an average of 40 to 100 strands of hair a day.
133
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82