Cupping is a technique that increases circulation and encourages the breaking apart of adhesions in the myofascial and muscle layers of the affected body area. It creates a negative suction on the tissue to create more flow and heal faster. It is typically used for muscle tightness/pain, loosening of phlegm, and boosting immunity. Cupping may leave colored marks on the body for up to 2 weeks (depending on the person). A person may or may not feel sore, as if getting a deep tissue massage, for up to 3 days after.