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.
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Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
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47% of people have a nightmare at least once a month.
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People who sleep late have more mental stamina and can outperform early risers.
33
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
You forget 90% of your dreams.
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The human brain is more active during sleep than during the day.
28