There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
You burn more calories sleeping than you do watching television.
348
The average cat sleeps about 2/3 of the day.
203
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212