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?