Deze spier (psoas major) kan RUGPIJN veroorzaken!

In this video, discover how a muscle that is NOT in the back can cause back pain. The video about back pain also explains an exercise on how you can relax this muscle yourself, reducing or even eliminating your back pain. Watch other videos about back pain below: Watch the video about the iliopsoas: https://www.fysiotherapie4all.nl/klac... Watch the video about back pain: https://www.fysiotherapie4all.nl/rugk... It would be great if you could help others with back pain by sharing this knowledge!