1. Accelerate lymphatic system circulation: When taking a hot bath every day, pay attention to brushing the body with a bath ball or loofah pulp, which can promote blood circulation in the body. In addition, raising your hands in your free time every day can also prevent the accumulation of fat under the armpits.

2. Do chest exercises: raise your hands flat to both sides, palms upward, and make circular motions. Do 30 forward circles, then 30 backward circles. You should feel that the muscles in your armpits and outer upper arms are tight. Don't give up easily. Persistence is the only way to be effective.

3. Practicing yoga cow-face pose: not only expands the breasts, but also helps reduce pressure, open shoulder joints, and eliminate armpit fat.