In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Within three days of death, the enzymes that once digested your food begin to eat you.
22
The average sperm cell swims at 8 inches per hour.
76
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 sigh acts as a physiological reset button.
23
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19