"We are male and female. We are artists, athletes, students, and business owners. We have depression, DID, PTSD, eating disorders, borderline personalities, bipolar disorder, or maybe no diagnosis at all. Some of us were abused, some were not. We are straight, bi, and gay. We come from all walks of life and can be any age. We are every single race or religion that you can possibly think of. Our common link is this: We are in pain. We self-injure. And we are not freaks."
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.