Breaststroke is more suitable for relaxation, and freestyle can consume more fat. The energy consumed by the human body every day is mainly related to the basic metabolic level of the individual, and only a small part is consumed by exercise. If you just use swimming, be careful not to stay in the water for too long. Being in a cold environment below body temperature for a long time will stimulate the skin to increase the thickness of subcutaneous fat to keep out the cold. If you want to lose fat in your chest and abdomen, I suggest you make a local fitness training plan to cooperate with swimming. If possible, go to the gym: flat belly roll, lateral bending of load-bearing body, leg lifting, supine belly roll, etc. These are all good exercises for the abdomen; Big bird, supine big bird, bench press on flat plate can exercise pectoralis major well. If you can't do barbells, you can use dumbbells, push-ups and chest clips. If you want to gain muscle, you have to gain weight, and if you want to lose fat, you have to become smaller and more groups. If you don't go to the gym, you can do some simple things at home. For the chest, you can use heavy objects instead of dumbbells to make birds, and then do push-ups. If you are at the waist, you can find a cushion to do anti-abdomen, supine leg flexion and extension, and upper body winding. If you eat, be careful not to consume too much energy, but the nutrition must be balanced and eat more lean meat and milk. Swimming once every three days is enough. It is best to train about four times a week for an hour and a half each time. Remember to do warm-up activities and do muscle stretching and relaxation after training.