Or coarse salt and stovepipe.

Before taking a bath every day, take a cup of coarse salt and add a little hot water to make it into a paste (to the extent that it will not fall off), and then apply it to the parts of the body that you want to lose weight, such as abdomen, arms and thighs. Let it stand for about ten minutes, rinse the coarse salt dry with hot water (you can also do some massage first, then rinse it with clear water), and then you can start taking a bath. If your skin is sensitive, you can't use ordinary coarse salt. You can buy more refined "bath salt" to use. This method is suitable for people who don't like sports and usually takes effect within a week or two.