Standing pile is to practice breathing, so that the lack of upper and lower focus can be solved one by one! It is a fitness method handed down from the ancients, such as washing marrow and cutting bones, but it is impossible to succeed at one time by gradual and static braking! It will take a long time to see the real seal. If the above symptoms appear, you can gradually call it a day and continue after you get better after a rest. You can't force your behavior to be good.