Sleep Lean" is a catchy, marketing-driven phrase that suggests you can burn fat and build muscle while you sleep. While the body does perform essential repair and metabolic functions during sleep, the idea that sleep itself is an active fat-burning session is an oversimplification. Here’s a breakdown of what the concept usually entails and the science behind it. The Core Idea Behind "Sleep Lean" Proponents of "Sleep Lean" typically focus on two main strategies: Nutritional Optimization Before Bed: The goal is to eat specific foods or supplements that theoretically boost your metabolism, enhance muscle repair, and prevent your body from storing fat overnight. Hormonal Optimization: Sleep is a critical time for hormone regulation. The "Sleep Lean" philosophy emphasizes improving sleep quality to optimize hormones like growth hormone (which aids muscle repair and fat metabolism) and cortisol (which in excess can promote fat storage). website : https://www.imdb.com/list/ls4108008994/