The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The human brain is more active during sleep than during the day.
28
The average person falls asleep in seven minutes.
115
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149