Let me talk about my experience of swimming to lose weight. I hope it will be useful to you.
First, the speed of swimming should be fast, and you can't relax like many people, because the calories consumed are too low.
20 14 travels five times a week, and each time 1200m is launched, and each swim lasts about 26 minutes. I felt sweaty after swimming, but I didn't feel sweaty in the water.
Second, it takes a long time to swim, which means there is enough time to swim. After swimming 1200m, change to other swimming styles, such as freestyle and butterfly, and make sure to stay in the pool for two hours.
Third, supplement protein after swimming and eat less carbohydrates and sugar.
After such continuous exercise, you will lose weight soon.
In fact, it is easy to lose weight, but it is difficult to stick to it!
I asked about fitness, not slimming. Your answer can only be that young people can do this. It should vary from person to person, and people of different ages have different requirements. Let me now answer the question of how far the elderly can swim to achieve fitness. Old people should do what they can, don't let them pee, their hearts can't stand it. The key is to keep swimming for more than 30 minutes, preferably about an hour, and keep swimming every day. I have been swimming for 50 years. I am 90 years old. I still swim 1000m in the swimming pool every day, but I have been swimming very slowly. Swimming 1000m (mainly breaststroke, occasionally freestyle) takes 45-50 minutes. But after swimming, the whole body is very comfortable and achieves the purpose of fitness.