The foundation of 10X is Ten to One (10:1) on nutrition labels: Ten Calories or less for each One Gram of Protein. If a food item contains a 10:1 ratio or less (5:1, 6:1, 7:1, 8:1, and 9:1 OK) of calories to grams of protein, it’s OK, whatever else is on the label. There are two exceptions to the ratio. The first is green vegetables. The ratio for green vegetables doesn’t matter. You can eat all you want of lettuce, celery, spinach, broccoli, asparagus, peppers, cabbage, cauliflower, kale, cucumber, and other greens. The second exception is very low-calorie foods with zero protein. These are also OK, and include hot sauce, many mustards, balsamic vinegar, seasonings, diet soda, other diet foods sweetened with erythritol, stevia, or other low-calorie sweeteners.