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Use "deep-sleep" in a sentence
"Apparently lost in deep-sleep stasis somewhere in a cryo chamber hidden deep within Nintendo, NightSky should have been one of 2009's best, but -- with any luck -- will move on to top 2010 lists."
"The quality of your sleep depends on your time in restorative slumber, including REM and deep-sleep phases."
"Your goal is to go through all of the cycles because the REM phase affects learning and memory while the deep-sleep periods impact growth hormone release, rest, and recovery while strengthening your immune system."