Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
The human heart creates enough pressure to squirt blood 30 ft.
37
The lense of the eye continues to grow throughout a person's life.
34
35,000 people in the U.S. will die from the flu annually.
6
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22