Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
You burn more calories sleeping than you do watching television.
348
Dieters who sleep more take off more fat that those who sleep less.
159
Bats sleep 18-20 hours per day.
5
People who sleep late have more mental stamina and can outperform early risers.
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A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6