The Science of Sleep: How Restorative Sleep Heals the Body and Mind Sleep is not merely a pause from wakefulness—it is a biologically essential process that allows the body and mind to heal, regenerate, and function optimally. Unfortunately, modern lifestyles often undervalue sleep, leading to widespread sleep deprivation and its many consequences on health and well-being. Why Sleep Matters Sleep affects almost every type of tissue and system in the body—from the brain, heart, and lungs to metabolism, immune function, and mood. It plays a key role in memory consolidation, emotional regulation, muscle repair, and hormone production. The Stages of Sleep The body cycles through different stages of sleep each night, typically repeating every 90 minutes: Stage 1 (Light Sleep): The transition from wakefulness to sleep. Muscle activity slows, and you can be easily awakened. Stage 2: Brain waves become slower with occasional bursts of rapid activity. Heart rate and body t...