Losing weight quickly will be a bit scary! Generally speaking, eating less and exercising more is always the essence of losing weight! There are 2 1 day diet, 7-day apple yogurt diet, cucumber and egg diet and so on. Even more frightening is Pigou. How to realize these methods can be found everywhere on the internet, but they are all scary. The other is exercise. Running, skipping rope and climbing stairs are all good choices. If you don't like sports, then all the methods are quite scary.