Sleep is incredibly important for nearly every aspect of your health, and your weight is no exception. Research suggests that when you are sleep-deprived, you’re a lot more likely to pack on extra pounds. Your body needs sleep in order to maintain optimal cellular function, support sustained energy levels throughout the day and maintain a positive mood—all of which are important components of a healthy lifestyle that leads to a stable weight range for your height and activity level. How does sleep impact your body weight? Read on to discover the connection between your body composition and the hours you spend resting after the sun goes down.