Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
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
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The human brain is more active during sleep than during the day.
28
You forget 90% of your dreams.
256