Must be an office worker ~ ~ seen a lot. The fatty muscles of the waist and spine are called erector spinae. That's because your sitting posture has been incorrect for a long time. Bend over because you can't sit for a long time, and that muscle is stretched for a long time, and the blood circulation is not smooth. And it may also cause disc herniation, especially kyphosis, so bending over will hurt. If you stretch forward, it hurts when you stretch it ~ so it will be cold, stiff and hard, ~ ~

Solutions; Get up and exercise every two hours 10 minutes, especially the waist muscles. Do some methods to relax muscles, such as massage and muscle stretching exercises. One more thing, go to the gym to find a professional coach to enhance the stability of the core muscles, instead of looking for a three-legged cat. Ask him what core muscles are first. See if he knows. Usually pay attention to sitting posture, sit up straight, don't bend over, and don't be too straight. Keep all our joints at 90 degrees ~ ~ Exercise more ~ ~ Call me if you have any questions ~ ~