https://www.healthcentral.com/slideshow/why-four-stages-sleep-are-so-important
Sleep Disorders

Why The Four Stages of Sleep Are So Important

VIEW AS: LIST | SLIDES

First stage


Second stage


Third stage


Fourth stage


Repetition of sleep stages


Insomnia's effect on sleep stages


Martin Reed

Martin Reed

@insomniacoach

Martin is the creator of Insomnia Coach, an eight-week course that combines online sleep education with individual sleep coaching. His course helps clients improve their sleep so they can enjoy a better life with more energy and start each day feeling happy, healthy, rested, and refreshed. Martin also runs a free sleep training course that has helped over 5,000 insomniacs. He holds a master’s degree in health and wellness education and studied clinical sleep health at the University of Delaware.