People who sleep late have more mental stamina and can outperform early risers.
33
Honeybees never sleep.
276
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
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
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
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33