What is Cupping & How Does it Work?
Cupping is the use of suction or negative pressure to improve the circulation of blood and fluids in the body. Glass, bamboo, or gourd cups are held over a flame to burn off the oxygen creating a vacuum and then the cup is placed on the skin.
Cupping Marks are not Bruises.
Here are some great links I found that give some more information about how acupuncture works!