The first question, after hard stretching, you must relax and stretch your waist muscles more. People who often pull hard often have lumbar muscle strain, mostly because the waist is not flexible enough. Long-term muscle tension causes the lumbar muscles to be overwhelmed, and muscles and their soreness will appear with a little effort. This condition is chronic lumbar muscle strain. We need to relax and stretch the waist muscles for a long time to relieve it. When the lumbar muscles are not so tense, they will get better gradually.

The second question, we need to pay attention to the details of the hard painting action when doing hard painting. Lumbar muscle strain can be divided into acute and chronic, and acute is often caused by overexertion. Chronic is mainly caused by long-term muscle tension. We need to relax stretching to prevent chronic lumbar muscle strain during exercise, and also need to adjust training movements and methods to avoid acute lumbar muscle strain.