Sleep Disorders DEEP SLEEP. HERE'S HOW MUCH YOU NEED By Joanna Carlson June 22, 2020 6 min read New research aims to determine not only how much total sleep is needed, but also how much of each stage of rest is required. Here's the breakdown... This post is for paying subscribers only Sign up and upgrade your account to a paid membership plan to read the post as well as all other paid subscribers only posts. Subscribe now Already have an account? Sign in