Dead fish are pictured on the banks of the Guanabara Bay in Rio de Janeiro February 24, 2015. International Olympic Committee members meeting in Rio de Janeiro this week will understand if its waters are not completely clean for the sailing events in 2016, the state's governor said on Monday. (Photo by Ricardo Moraes/Reuters)

Professional bodybuilders (L-R) Victor Martinez of the Dominican Republic, Mamdouh Elssbiay of Egypt, and Cedric McMillan and Juan Morel of U.S, pose during the Arnold Classic Brazil 2015 in Rio de Janeiro, May 30, 2015. REUTERS/Ricardo Moraes