Most people do not sleep properly, which can affect everything from mood to energy levels. Proper sleeping posture has 3 main benefits: 1. Healing – Sleep helps the body heal physically and cells regenerate. 2. Better Mental Health – A well rested brain is sharper and can think better. 3. Weight Loss – We lose the most weight while we are sleeping. The right sleeping posture can lead to less aches, less pain and less stiffness.