When swimming, because the density and heat conductivity of water are greater than those of air, more energy is consumed than on land. The supply of energy is replenished by consuming sugar and fat in the body. Regular swimming can gradually remove excess body fat without becoming obese. Swimming on an empty stomach affects appetite and digestive function, and may also cause unexpected situations such as dizziness and fatigue during swimming; swimming on a full stomach will also affect digestive function, and may also cause stomach cramps, and even vomiting and abdominal pain. When a person swims in water, his arms paddling and his legs kicking or pushing the water, all muscle groups in the body participate in the activity, which can help the muscles of the whole body get good exercise. In particular, the pectoralis major, deltoids, triceps and upper body back muscles that are related to upper limb swinging and paddling will become more developed. At the same time, swimming is a cyclical exercise. Stroke and kick are alternating periods of tension and relaxation. Long-term exercise can make muscles soft and elastic. Because of this, female swimmers often have plump and firm breasts, elastic muscles, and a well-proportioned and curvaceous body. When swimming, because the density and heat conductivity of water are greater than those of air, more energy is consumed than on land. The supply of energy is replenished by consuming sugar and fat in the body. Regular swimming can gradually remove excess body fat without becoming obese. Therefore, swimming is one of the effective ways to lose weight. Sunlight and air are also the main factors that make people healthy and beautiful when swimming. Appropriate sunlight can activate certain cholesterol in the skin and convert it into vitamin D. Adequate vitamin D can promote normal growth and development of bones and prevent rickets. Sunlight can also increase people's resistance to disease, make the blood more bactericidal, increase metabolism and promote sleep. Fresh air can invigorate people's spirits and replenish their physical energy. It is worth emphasizing that women must pay attention to three points when swimming: 1. Avoid swimming before or after meals. Swimming on an empty stomach affects appetite and digestive function, and may also cause unexpected situations such as dizziness and fatigue during swimming; swimming on a full stomach will also affect digestive function, and may also cause stomach cramps, and even vomiting and abdominal pain. 2. Avoid swimming after strenuous exercise. Swimming immediately after strenuous exercise will increase the burden on the heart; the sudden drop in body temperature will lead to a weakened resistance and cause colds, pharyngitis, etc. 3. Avoid swimming during menstruation. During menstruation, the female reproductive system has weak resistance, and swimming can easily allow bacteria to enter the uterus, fallopian tubes, etc., causing infection. |
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