One Food Diets work, because they limit calories, they limit carbohydrates, and because you get sick of eating the same food every day, so you eat less. Most patients can stay on One Food Diets for two days to a week. Try to keep you calories under around 1000 a day. Eat just hot dogs – low fat, non-fat or regular hot dogs. Eat up to a dozen eggs a day. Eat just canned tuna with relish and Miracle Whip Free. Eat just low-fat Greek yogurt. Eat just fast-food hamburgers, without the bun. Eat just Wendy’s Chile. Eat just Arby’s Roast Beef, without the bun. Eat just Boston Chicken, a whole chicken a day, without the skin.