Have you ever reached down to pick up something and your back started hurting. Have you ever reached back in the car and felt a spasm. This video explains this happens many times. I will show you how to see if you have adhesions in your spinal canal and how to check if certain spinal movements create a threat to your brain. This threat may case severe guarding in the muscles around the spine creating neck and back pain. This video shows a quick evaluation you can do to see if you may be prone to sudden back pain.