1. Abdominal muscle exercise method: Sit-ups at both ends (legs and head are raised at the same time, reaching the level of head and leg contact), and keep practicing every day. Each exercise is divided into three groups. The first group stopped for five minutes, and then the second group, the second group stopped eight minutes before the third group. 2. Chest muscles and biceps brachii: buy a tension spring and an arm strength device. Arm strength device is mainly aimed at chest muscles. When holding the arm strength device firmly, focus your thoughts on the arms and chest muscles, and exert your strength with the arms and chest muscles. The tension spring is aimed at the biceps brachii. Step on one end of the tension spring with your foot. Be sure to step on the old one with your feet, and be safe. Hold the tension spring, stand up straight and pull it up like a dumbbell. Also divided into three groups, the same as 1. 3. Diet: Eat well in the morning, eat full at noon and eat half full in the afternoon. Be sure to control your food intake and don't eat too much because of exercise. Eating two eggs a day can replenish the energy lost in training and increase muscle mass. If you have the energy to run five kilometers a day, you will definitely lose weight, hehe, it's a bit impossible. Wish you success!