I have severe lumbar spine issues involving central canal stenosis, foraminal stenosis, vertebra out of alignment, several herniated discs and compressed nerves. This all causes an almost constant ache on my left side which occasionally leads to sciatica down to the knee. With PT, I have learned to manage it. No BLT (bending, lifting, twisting), which means most of these exercises would aggravate my symptoms. The ONLY thing that helps greatly is standing back extensions. If I’m being good, I do 30 in the morning and another 30 in the evening (bend backward over a counter, hold for two beats). I use a reacher/grabber to pick things up off the floor. I strongly advise you to get full spinal X-rays and an MRI. Good luck!