All this should be chosen according to your own conditions. Running is monotonous, knee pressure is high, and it is easy to build muscles, but the effect is obvious. Dancing is more temperament and coordination, and it is not easy to be monotonous. It is easier to exercise the whole body muscles. No matter which one you choose, you should stretch your muscles after exercise, otherwise the tendons will form nodules, which is also commonly known as tendon muscles. It's too big to look good.