People who are not light in weight but have thin arms give people a very thin feeling; People who are not heavy but have thick arms feel fat. Therefore, if you want to look thin, it is wise to thin your arms first. Generally speaking, the upper arm is divided into medial and lateral. The inside is loose. If you relax seriously and the wind blows like a flag, it will look ugly. Therefore, we thin our arms to cure roughness and looseness. Now, check the inside of your arm. If it is swollen, it usually contains more water. We can make muscles contract by strengthening venous circulation and lymphatic reflux. I suggest you try a massage. Rub it a little at the watery obesity, and then push it down in the direction of venous reflux and lymphatic reflux, which is equivalent to discharging water into the armpit.