“Top Chef” host Padma Lakshmi reveals how she stays thin while hosting the show: “I’ve had a baby; I eat for a living,” she tells Hamptons magazine. “I have a funny picture of myself that my makeup artist took on set — I’m wearing a black dress, but I’m actually doing push-ups backstage. I carry a jump-rope in my bag. I work out whenever I can.” Lakshmi says she goes on detox diets of “no wheat, no red meat, no cheese, no sweets, no alcohol, no fried food.” Sounds tough.