Both are good, but I recommend swimming, because the muscles that come out of fitness are all piece by piece, and the muscles that come out of swimming are very smooth. Moreover, if you don't do it right, you will be easily injured by sports, such as being injured by equipment and sweating, which is very uncomfortable. Swimming is different. Swimming can exercise people's inner and outer well. Because water is soft, muscles can be smooth, swimming can involve a lot of air exchange, and can exercise internal organs, especially lungs. Swimming doesn't sweat, and the energy consumed by swimming is far greater than the exercise on land at the same time.

Who says swimming has muscles? It looks so big. This is sheer nonsense. I haven't seen how old I am after practicing for 7 years. You go to see those who practice weightlifting, and then you go to see those who practice water sports, which one looks more uncomfortable (except diving, because diving needs to practice handstand and so on, and muscle requirements are more important). )。 The only bad thing about swimming is that you need a swimming pool, but don't you also need fitness equipment to practice fitness? For girls with poor figure, swimming will lose face, but it doesn't matter. There are many people in poor health in the swimming pool. Anyway, you are going to practice, no matter what you think. I strongly recommend swimming. You said to be thin in an all-round way, so it is more important to go swimming. Think about it, every stroke of swimming must be coordinated with the muscles of the whole body, and fitness can only be practiced locally, such as sit-ups and abdominal muscles, push-ups and chest muscles. So I still recommend swimming.