Lack of water is the #1 trigger of daytime fatigue.
148
People who sleep late have more mental stamina and can outperform early risers.
33
The human brain is more active during sleep than during the day.
28
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
Termites work 24 hours per day and they do not sleep.
57
Cows can sleep standing up, but they can only dream lying down.
745