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Author Question: For a normal person, about how long does a cycle of sleep (from stage 1 to stage 4 and back again) ... (Read 110 times)

Mr.Thesaxman

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For a normal person, about how long does a cycle of sleep (from stage 1 to stage 4 and back again) last?
 
  a. 10 minutes
   b. 90 minutes
   c. 4 hours
  d. 7 hours

Question 2

After entering stage 4 for the first time each evening, the sleeper typically ____.
 
  a. returns immediately to stage 1
  b. enters REM
  c. cycles back through stages 3 and 2
   d. wakes up



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kaylee05

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Answer to Question 1

b

Answer to Question 2

c





 

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