Place your palm rrn between your breasts and you've found the thymus. This is even the energetic center for heart and soul. Breathe into and lift this heart and thymus area and if you breathe out drop shoulders. As you impliment this type of breathing into the energetic heart and thymus, you're lifting the lower belly muscles and activating the ab muscles that facilitate breathing, shape the waist and pull in the girdle of muscles that pull with your belly "pooch".