To celebrate reaching 5 million hits to grow-a-brain (congrats), hanan is offering $100 to a random commentator (of 500) who posts a "hello" here. As of this morning, there are still 90 slots left - go and say hello and possibly win some cash.
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.