Iranian Shiite Muslim worshippers attend the weekly Friday prayer during the Muslim fasting month of Ramadan on July 12, 2013 at the university of the Iranian capital, Tehran. During Ramadan, one of the five main religious obligations under Islam, Muslims are required to abstain from food and from drinking liquids, smoking and having sex from dawn until dusk.  AFP PHOTO/ATTA KENARE        (Photo credit should read ATTA KENARE/AFP/Getty Images)