My mom is 45 years old! She has been practicing Yang's Taijiquan in the morning for five years. My spine always hurts, what is the reason?

Practicing taijiquan generally need to have a teacher to guide, unless the enlightenment is very high people, otherwise they will be in accordance with their own misunderstanding to practice, forced to use a certain part of the muscle, over time will be hair pain, practice boxing one thing is to "pay attention to the natural", that is, how to practice comfortably on how to practice. It is recommended that your mother to hire a professional taijiquan master, under the guidance of practice, and so on taijiquan to a certain extent, only after a certain degree of training alone.