Cupping therapy utilizes glass cups that are either heated (fire cupping) or connected to a pump to create suction. The skin is gently drawn upwards by creating a vacuum in the cup over the target area of the body to create negative pressure. Negative pressure assists lymphatic drainage by stretching open the lymphatic vessels and increasing lymph movement both locally and systemically. Increased lymphatic output leads to improvement in immune system function. Negative pressure created from cupping can also break up scar tissue and adhesions and relieve acute and chronic muscles tension.