There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The average cat sleeps about 2/3 of the day.
203
47% of people have a nightmare at least once a month.
186