When I was in college, few people paid attention to the stretch and softness of lacing. When I used to work in a magazine, the studio next door was a professional sports magazine. Their books usually just draw a few pages at the end of the book to tell the story of lacing, use characters to express actions, and then rush by. In recent years, the movement about softness has gradually become lively, and everyone has a certain understanding of yoga and is interested in learning. Fitness clubs also set yoga as a basic project. But as for "lacing", I think there are still many adults who think that it is just a stretching exercise to prevent strain before strenuous exercise. Actually, it is not. Before giving birth to a baby, I write and review manuscripts every day, sit at work and sit for more than ten hours after work. I am in good health because I am young. I just feel uncomfortable with my cervical spine, but over time I gradually feel heavy, my neck can't bend hard, and I will feel sleepy and sore. After sitting for a long time, I still have backache and chills.