How can I lose 20lbs when I have sciatica? Are there any exercises that I can do safely?

I know that I should cut down my caloric intake, especially since I have been less active lately because of the pain. Also, I work 2 jobs, one is in an office during the day that the other is waiting tables at night time. I find the serving job to be stressful for my back, [...] http://bit.ly/o6BjDH