Sleep is a very important part of everybody's day and contributes to their overall health. There is not a day that goes by, that sleep quality and quantity is not mentioned in Northwood Clinic Lane Cove. So here is some tips. Signs of not enough sleep/rest * mood swings * lethargy * poor concentration * angry * poor memory * over eating/ hunger Chinese Medicine Advice on Sleep * 7 hours sleep (quality non waking sleep) * 10.30pm latest time to sleep, because from 11pm to 1am