People who sleep late have more mental stamina and can outperform early risers.
33
You forget 90% of your dreams.
256
The average cat sleeps about 2/3 of the day.
203
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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