For optimal health you can cut calories during your fast periods by cutting down on calories. Despite this, it's impossible to breakfast if you are not over 125 calories. A woman is required to have 2,000 calories every day – a person must consume only 2,500 calories a day.
Because your body can accumulate a large amount of calories and stores these in fat, you should fast intermittently. Consumption of foods or beverages that do not contain fats or calories are a good choice. Eating smaller amounts each day rather than large meals may also be a benefit.