Swimming every day, the first week is just 1 hour. Just swim as much as possible when your physical strength permits. Change your swimming posture (breaststroke, backstroke and freestyle) and keep a happy mood. Don't take it as a burden.
In the second week, it will gradually increase to 1.5 hours, and then it will be maintained at 1.5~2 hours (never exceed 2 hours, and you will go ashore if you find your hands are too soaked. According to your physical condition, don't be too reluctant.
However, the diet should be strictly controlled, and it is suggested that breakfast should be full (milk steamed bread and soybean milk can be used). There is oil in steamed bread and noodles. Reduce the amount of lunch, mainly pay attention to cooking methods. Don't use too much oil and salt, mainly fried or boiled vegetables and eggs, lean meat, or peeled chickens and ducks.
Still have to ensure nutrition. Eat less fruits such as boiled vegetables for dinner. If you are hungry, you can eat apples, pears or boiled vegetables. You can boil a poached egg if you can't stand it at first. Never eat any sweets or snacks.
Swimming is a skill that people float upward under the buoyancy of water and make their bodies move regularly in the water by virtue of buoyancy.
Swimming can be divided into competitive swimming and practical swimming. Competitive swimming is the second largest event in the Olympic Games, including butterfly, backstroke, breaststroke, freestyle and synchronized swimming.
With the development of swimming, swimming can be divided into practical swimming and competitive swimming. Practical swimming is divided into sidestroke, diving, breaststroke, treading water, rescue, etc. Competitive swimming is divided into breaststroke, crawl, backstroke, butterfly and freestyle. The grades are: Grade III, Grade II, Grade I, Elite and International Elite.
Reference: Baidu Encyclopedia Swimming