Our body clocks cause cuts and burn wounds to heal much faster if the injury occurs during the day rather than at night.
Many people develop sleep problems when they are stressed out, or after having witnessed or experienced a traumatic event such as a car accident.
While the role of sleep in learning and memory has been widely investigated, much remains to be explained and controversy abounds.
Sleep deprivation increases food purchasing the next day, both in terms of calories and weight of food purchased.
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