Cover of the textbook Performer B2 - Student's Book

The key answer of exercise 5

The key to exercise solutions in chapter 7 - Life comp for the textbook Performer B2 - Student's Book with authors Marina Spiazzi, Marina Tavella, Margaret Layton from Zanichelli

Question

Watch the video again and make notes about the four stages of sleep.

Answer

  1. light sleep 
  2. reduction of brain and body activity, easier to be awoken during these phases
  3. muscles and body get more relaxed, the pattern of brain waves is slower
  4. REM sleep, most of the body (except the eyes and breathing muscles) is temporarily paralyzed, most intense dreaming occurs 

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