Cupping Therapy is safe and Traditional Treatment. With Flash Cupping, exactly what it sounds like, quick and short intervals of movement. With this treatment glass cups are placed on the body for approximately 5 – 30 seconds and then quickly removed once the pressure in the cup is released. This is done repeatedly up to 50 times on the section of tissue or body that needs healing. This technique is done multiple times in one area or throughout the body until the tissue becomes flushed and tension has decreased.