Sea otters hold hands while sleeping so they don’t drift away from each other.
104
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
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
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
You burn more calories sleeping than you do watching television.
348
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22