A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
Your heart rate can rise as much as 30% during a yawn.
69
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
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 human brain is insensitive to pain.
76
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Dieters who sleep more take off more fat that those who sleep less.
159