Fasting in the United States is not widely applied like it is in foreign countries. In other areas outside the U. S., it is used don't just for weight loss, but for internal and spiritual health. Nevertheless if you're looking for a quick way to lose tons of weight without hours at the gym, going on a fast may be just the admission. But is fasting for a day healthy? It is if it's done right. The key is to lower the calories, even extremely slightly, that you were taking in before. But is going on a fast for a day healthy? Not if you eat twice that calories the next day. Nevertheless you'll see a difference...