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 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
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Termites work 24 hours per day and they do not sleep.
57
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
47% of people have a nightmare at least once a month.
186
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193