What is this video about?
What types of sleep do we have?
How do you decipher the word REM?
What stages does non-REM sleep include?
light sleep
restful sleep
deep sleep
calm sleep
difficult sleep
What does REM sleep include?
memory consolidation
energy conservation
dream-imagination
How many stages does our sleep cycle include?
Describe each of the stages.
What factors influence our sleep patterns?