Deep Sleep Optimization: how to increase slow-wave sleep naturally What Is Deep Sleep and Why Does It Matter Deep sleep, also known as slow-wave sleep (SWS), is the most physically restorative stage of sleep. During this phase, brain waves slow dramatically, muscle activity decreases, and the body enters a state of profound repair. Deep sleep

Deep Restorative Sleep: The Scientific Key to True Healing and Nighttime Recovery   Deep restorative sleep is more than rest — it’s the foundation of nighttime recovery. When you upgrade this stage, your health and energy improve dramatically. Introduction: We live in an era where people constantly discuss productivity, energy, weight control, and brain performance.