In one day, adult lungs move about 10,000 litres of air.
11
Within three days of death, the enzymes that once digested your food begin to eat you.
22
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average sperm cell swims at 8 inches per hour.
76
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118