A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
44% of kids watch television before they go to sleep.
106
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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People who sleep late have more mental stamina and can outperform early risers.
33
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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