Publisher's Synopsis
The body is always stiff and the injuries have not healed for a long time. The problem is that you only know how to apply force but don't know how to release it. Only by learning to release force can you apply force better! The relaxation effect is better than ordinary fitness or stretching exercises Practical tips from Japanese League A, Japanese professional baseball, and Judo Olympic athletes 28 illustrations + video QR code, complete demonstration of training movements Experts followed by 250,000 people on social media Whether you are a professional athlete or a fitness enthusiast, there are times when you are in poor condition. Sometimes the harder you work out, the harder it is to make a breakthrough, which may even lead to bad luck.
