Cows can sleep standing up, but they can only dream lying down.
745
The human brain is more active during sleep than during the day.
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47% of people have a nightmare at least once a month.
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The strangers in your dreams are actually people that you've seen in real life.
50
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
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15