Why do people, babies, and most mammals "pandiculate" after sleeping? When we sleep, our body stays in one position for a long time, therefore the blood flow slows down without movement, and even blood vessels and capillaries narrow and work in the mode of moderate activity. Pandiculation after sleeping helps muscles and joints work and function. It enhances blood flow, and oxygenation of muscles, and accelerates metabolism. A pandiculation consists of three phases, contraction, release, and res