Food list for The Negative Calorie Diet (2015) by Rocco DiSpirito. Eat 10 foods that are “negative calorie” and can help your body burn fat and lose weight. 10-Day Cleanse – 4 meals a day, including 3 smoothies and 1 meal (soup or salad every other day), mostly negative-calorie. 20-Day Eating Plan – 4 meals a day, and unlimited amounts of negative-calorie foods. Maintenance plan – Similar to 20-day plan, add some starches and occasional treats.