Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
The strangers in your dreams are actually people that you've seen in real life.
50
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
People who sleep late have more mental stamina and can outperform early risers.
33
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