Im a 49 year old male from the south east. I always looked at Yoga as an activity for Hippies and girls. My mind and perception were changed however when i started experiencing back pain. I was prescribed meds and they work but I hate taking meds as well as my work does not support the use of narcotics. I am still new to the art and was wondering if you could offer some poses for sciatica nerve pain. I use two now, I don't know the names but both are lying on my back knee to chest and the other is knee to chest. Knee pulled to one side while looking and reaching to the other side. Also I don't know how long to hold the poses. Any help would be appreciated.