The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Within three days of death, the enzymes that once digested your food begin to eat you.
22
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
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
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
Gin is a mild diuretic which helps the body get rid of excessive fluid. Thus, it can reduce problems such as menstrual bloating.
90
The average sperm cell swims at 8 inches per hour.
76