Sleep is a natural process characterized by low or absent consciousness and very little to absent body motion. The timing of sleep is usually controlled by an internal body clock that is also known as the circadian clock. All mammal animals sleep. There is a special gene that that determines the amount of time that each individual person requires for sleep. The average duration of time required for sleep by an adult person is seven hours.
Lack of adequate sleep is shown to double the risk of death from cardio-vascular diseases (i.e. “heart disease”). Inadequate sleep is associated with high blood pressure and type 2 diabetes. Chronic sleep deficit results in diminished ability to perform high-level cognitive function (i.e. thinking). Sleeping difficulty is associated with psychiatric disorders like depression, alcoholism and bipolar disorder.
Here are 7 reasons why you must sleep 7 hours every night (or day).
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