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mcranfield mcranfield
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6 years ago
The fact that most people sleep almost exactly the same amount each day under free-running conditions, despite large day-to-day variations in physical and mental activity provides strong support for the dominance of
 
  A) recuperative factors in the regulation of sleep.
  B) circadian factors in the regulation of sleep.
  C) light cycles in the regulation of sleep.
  D) light cycles in the regulation of wakefulness.
  E) temperature in the regulation of sleep.
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sydifer34sydifer34
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