From that site: "It seems that all you really need to survive and feel rested is the REM phase, which is only a tiny portion of your actual sleep phases at nig

From that site: "It seems that all you really need to survive and feel rested is the REM phase, which is only a tiny portion of your actual sleep phases at night. " When is this meme going to die? This data from the 1930s has been thoroughly disproven. Delta sleep is essential for memory formation.