Cupping therapy is an ancient form of alternative medicine in which a therapist puts special cups on your skin for a few minutes to create suction. People get it for many purposes, including to help with pain, inflammation, blood flow, relaxation and well-being, and as a type of deep-tissue massage.
The marks left behind also indicate the condition of the treatment area. If there are no marks or they are light pink, it could mean a lack of blood flow to the area. Darker areas may represent an accumulation of toxins that the cups are helping flush out of your system.