1, freestyle: When practicing freestyle, the biceps and triceps of the upper arm need to exert more force, so freestyle can make the lines of the arm symmetrical and beautiful, and girls with "butterfly arm" can make more use of this stroke to shape the lines of the arm. In addition, freestyle can also make hip muscles strong and elastic, and also play a certain role in improving shoulder muscle strength.
2. Breaststroke: Breaststroke is mainly kicking and clamping, which is different from freestyle and backstroke. When doing breaststroke, the thighs should be fully extended and contracted. This action uses more quadriceps, so it can strengthen the strength of the legs and help eliminate the fat on the inner thigh. If you strengthen training every day and swim down in a summer, you will find that your thighs are no longer slack and become much stronger.
3, backstroke: when backstroke, latissimus dorsi has a large force, which can stretch the back muscles. For white-collar workers who sit in the office for a long time, backstroke is beneficial to relieve discomfort such as back pain. In addition, when backstroke, the body should turn to both sides like a log, which can not only reduce the resistance, but also give full play to the strength of trunk muscles. This is very effective for eliminating excess fat in the abdomen, making the abdomen no longer slack, exercising the elasticity of the legs and waist, and making it firm.
Expand data to lose weight
1. When swimming, the body is directly immersed in water, which not only has great resistance, but also has excellent thermal conductivity and rapid heat dissipation, so it consumes a lot of heat. Just like a freshly boiled egg, the cooling rate in air is far less than that in cold water.
Experiments show that the heat consumed by people swimming in a standard swimming pool for 20 minutes is equivalent to swimming on land at the same speed 1 hour, and the heat consumed by staying in 100 minutes is as high as 100 kcal, which is equivalent to the heat released by air at the same temperature downstream 1 hour.
2. In addition, swimming diet can avoid sports injuries of lower limbs and waist. When you exercise on land to lose weight, your body (especially lower limbs and waist) will bear great gravity load because of the heavier weight of obese people, which will reduce your exercise ability and make you tired easily, thus greatly reducing your interest in losing weight and damaging the joints and bones of lower limbs.
References:
Baidu encyclopedia-swimming to lose weight
References:
Xinhuanet-A must-read strategy for swimming to lose weight has a remarkable effect on slimming and shaping.