I always love steps dvds and all the jumping but 4 years to now I been able to do it, and I have to sell a lot of my Cathe dvds, I start with leg pain and sharp pain in my lower back, I do have a sciatica and spinal stenosis, L4,L5 dislocated, I been have my injecctions every 3 to 6 months for pain, I always lisen my body, now I'm more focus in lifting more and less cardio. Check with the doctor and ask for MRI, don't wait for too long.
Hope you feel better.