Liquid and congealed blood is seen inside cups during a Hijama cupping therapy session at a medical center...
Liquid and congealed blood is seen inside cups during a Hijama cupping therapy session by practitioner Al Sheikh Mohamed El-Sayed inside a treatment room at a medical center in Shubra El-Kheima on the outskirts of Cairo, Egypt, August 13, 2016. Hijama or cupping therapy, an ancient treatment that uses glass cups and suction to help circulate blood and relieve muscle tension, was put into the spotlight during the Olympics after prominent athletes like U.S swimmer Michael Phelps hit the pool in Rio with circular red marks on his back. Picture taken August 13, 2016. REUTERS/Amr Abdallah Dalsh