Zig Zagging carbs is one of the most effective ways how to reduce belly fat.
Since this is an advanced strategy, you should only use it once you have mastered the basics and fundamentals of proper nutrition and exercise.
The approach is simple, for 2-3 days you drop your carbohydrate intake, increasing your intake of protein and/or dietary fat.
This is done by switching from a nutrient ratio of 50-30-20, to 40-40-20, or 40-30-30, or even 30-40-30, etc.
This means that the number of calories from carbohydrates, protein and dietary fats in your meals will be the same as in these nutrient ratio combinations.
So if we use the 40-40-20 example, this means that 40% will be carb calories, 30 % will be protein calories, and 30% will be dietary fat calories.
You would eat your food with these nutrient ratios for 3 days in a row, and on the fourth day would raise them back up to 50-30-20 for 3 days, and then drop them back down to 40-40-20.
During the 3 days with a low carb intake, the increase in protein, and the decrease in the carbs would raise your metabolism and you would burn more calories.
The on the fourth day, when you raise your carb intake, your body will not have the time to trigger any mechanisms because it would start to receive moderate amounts of carbohydrates for three consecutive days.