According to your needs, the early stage is suitable for full fat reduction. Aerobic exercise in the early stage, diet control, ensuring high protein, appropriate carbohydrate and low fat food, reducing salt intake, will help to reduce fat. The fat in the abdomen and chest belongs to stored fat, which is the last fat to be decomposed, so you may lose weight in your face or other parts at first, and there is no obvious change in your abdomen. You should stick to it for a while. It is suggested to insist on aerobic training for at least 3 months to reduce body fat to a certain extent, and then start to increase muscle exercises with anaerobic equipment to make the chest muscles flat and thick instead of protruding. After you finish your muscles, practice your pectoral and deltoid muscles, like a clothes hanger. The deltoid muscle and the upper chest are thick, and the whole person will look good when wearing clothes.