The human brain is more active during sleep than during the day.
28
A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
194
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
44% of kids watch television before they go to sleep.
106
You forget 90% of your dreams.
256
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149