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
People who sleep late have more mental stamina and can outperform early risers.
33
Honeybees never sleep.
276
Dieters who sleep more take off more fat that those who sleep less.
159
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
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
Cows can sleep standing up, but they can only dream lying down.
745