What Is a Power Nap and How Is It Different From Regular Sleep? Before exploring how power naps may influence metabolism and weight management, it is important to understand what a power nap is, including its typical duration, the stages of sleep it involves, and how it differs from both a full night's sleep and longer daytime naps. Defining the Power Nap A power nap , also known in sleep research as a Stage 2 nap , catnap , or prophylactic nap , is a short period of sleep that typically lasts between 10 and 30 minutes . Its purpose is to provide the restorative benefits of light sleep while avoiding the deeper stages of sleep that often cause sleep inertia , the grogginess and reduced mental performance that can occur after waking from deep sleep. Unlike longer naps, a power nap is intentionally limited to the lighter stages of non-rapid eye movement (NREM) sleep, primarily Stage 1 and Stage 2 . These stages support mental and physical recovery without progressing into slow-...
