“Back in 2005, the Cuban-American singer — sought by some of the world’s most prestigious opera houses — weighed 95 kilograms (210 pounds). Now, she weighs just 56 (123 pounds). … ‘I was told, ‘You need to fix the weight problem if you want to have any chance at all’,’ she said of an early experience at New York’s Metropolitan Opera House.” And she did fix it: she started running marathons.