Swimming is a good exercise. Can help you consume a lot of energy and lose fat. It also has a good effect on your heart and lung function, and can also exercise muscles and increase flexibility. Swimming has little effect on joints, and it is more convenient for people with joint diseases, obese people or pregnant women to exercise. When you are injured, water sports is a common physical therapy and rehabilitation means. Some people say that swimming will increase fat, because it will thicken the body's fat layer under the stimulation of water temperature. One function of fat is to keep warm. This statement has no scientific basis. We will specifically mention in future fat-reducing articles that excessive body fat is related to long-term overeating and lack of exercise. If you burn calories in swimming and keep a proper diet, your fat will decrease, not increase. Swimming is boring, you can't talk to others, the scenery changes little, the underwater walkman is expensive and not easy to use, and swimming takes more time. You must go to the swimming pool first, and then spend time changing your swimsuit before you can exercise. Therefore, I don't recommend that you spend a lot of time swimming. Swimming is a way of keeping fit, which requires patience and skill. If you are not familiar with water, you can't walk far for a long time. At this time, you should take some swimming lessons or ask friends or coaches to guide you. Because the swimming technique is very complicated, I won't introduce it in detail here, but there are several points to pay attention to: take a breath, beginners often take too little breath. When swimming, your body needs much more oxygen than usual. Insufficient ventilation will make you tired prematurely and your health effect is not ideal. Bow your head, some swimmers are willing to hold their heads high and chest high, and their necks lean back hard, which can easily cause discomfort and pain in their necks. It is best to warm up and stretch before entering the water, and don't use too much force when entering the water, so that the body has an adaptation process.