The kung fu of opening bricks actually belongs to my family. When practicing hard work, it will change the structure of the bone itself. This is the so-called "Wolf's Law", which is based on the great discovery of19th century surgeon Julius Wolf. The basic structure of bone is trabecular bone, and its name comes from trabecular bone in Latin. If the bone is repeatedly damaged, it will increase the calcareous structure, that is, transform the trabecular bone. Bones will become denser, harder and more patient. Ancient masters have long known the secret of the law of wolf nature. For hundreds of years, they used boards, sand, iron or stones as training tools. As the saying goes, it's hard to try.

You can practice with sandbags. When making sandbags, you don't have to make them too big. The pillows are about the same size, weighing about 20 kg. It can be filled with iron beads or other hard circles, and three handfuls of mung beans can play the role of clearing away heat and reducing fire. Remember to wipe the exercise area with safflower oil after each exercise to prevent serious damage to bones and muscles.