Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
People who sleep late have more mental stamina and can outperform early risers.
33
Bats sleep 18-20 hours per day.
5
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Termites work 24 hours per day and they do not sleep.
57
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
If you hold farts in during the day, they'll just come out when you sleep.
16