I have been diagnosed with both Spondylolisthesis and Spondylitis. It has been about 4 years now, I am 24, and I am constantly getting severe lower back spasm's. Does anyone know anything that might help? I've tried to stick with stretching, but I just can't get into it. My wife wants me to do Yoga, but one doctor that I saw mentioned that I shouldn't tilt backwards. Please help!