Will Muslim athletes fast during Ramadan and the Olympics?
17 July 2012 Last updated at 15:00 BST
Once every 44 years the Olympic Games and Ramadan, the month of fasting for Muslims, coincide - and this year, they have.
Muslim athletes are facing the dilemma of whether or not to fast during the Olympics.
Karen Zarindast reports.
Video produced by BBC Persian's Pooria Jafereh