界是功能之限
Realm is the threshold of capacity.
Gravity, like breathing, is a constant in our lives. For those who are studying old practices, it is, as far as training is concerned, the perfect example of how virtuous and vicious circles will shape training and fundamentally change it. In this case, it is very simple. As long as we grow, up till maturity, the influence of gravity is positive. It makes our body stronger and exercices will tend to use at its best this opportunity. Once we become grownups, it is reversed; gravity slowly impedes us on all and any level.
