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
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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Cows can sleep standing up, but they can only dream lying down.
745
You forget 90% of your dreams.
256
47% of people have a nightmare at least once a month.
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