MediCupping will increase local blood supply to the muscles and skin and will allow for toxins to be carried away via the lymph. Conditions of chronic and acute pain can be relieved with minimal discomfort and tense muscles softened quickly and easily. So how does vacuum therapy work to eliminate this solid bloat and open drainage in the body?.. The vacuum lifts and releases rigid soft tissue, as well as scars, adhesions and restrictions by clearing debris, opening drainage, and easing limited movement. This technique relieves pain and enables the body to promote healthier tissue.