First, definitely not. If you want to lose weight, you can't fast. You should lose weight scientifically and eat more vegetables and fruits, because if you don't eat (many people who lose weight now take this misunderstanding), your body will have no nutrition, but you still have to work. Without nutrition, your body will take your fat and convert it into more fat, so you should supplement nutrition. Besides diet, we should do more exercise in our spare time.