The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
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
Pain travels through the body at 350 feet per second!
23
Most lipstick contains fish scales.
37
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
There are more bacteria in your mouth than there are people in the world.
60
Wearing headphones for an hour increases the bacteria in your ear 700 times.
233
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193