It seems that there is no effect of growing muscles. I suggest you go swimming. This exercise is the best.
Benefits of swimming: 1. Enhance cardiopulmonary function. When people exercise in water, all organs should be involved. When they consume more energy, the blood circulation will be accelerated, which will increase the load on the heart and speed up its beating frequency, so that they can exercise their cardiopulmonary function well. 2. It is also good for losing weight, keeping fit, increasing resistance and caring skin.
Precautions for swimming: 1. Because swimming requires muscles in all parts of the body, warm-up exercises should be done before going into the water, such as a set of broadcast gymnastics or some muscle stretching exercises to prevent muscle strain or underwater cramps. Don't lift your head too high when swimming and taking a breath, otherwise it will cause back muscle strain.