Yoga Help Needed

I have been lying in bed listening to Inhale, a Yoga program on the Oxygen channel at the obscene hour of six in the morning. So far I think I have mastered the Corpse pose. Does doing Yoga count as exercise if you are still in bed? Somehow, I think not. Still, Steve's music calls to me some mornings and I sit up and try to lean forward to put my face on me knees...not. One morning I gave the Child's pose a shot to ease my aggravated lower back. On a pillow top bed it was so restful that I almost fell asleep and smothered myself. My back felt lots better. Several times during the day, I plopped to the floor and assumed the position. Then, late that night I started having pain in my guts and running a fever. Then the running to the bathroom over and over. Somehow all those new positions must have shaken some grime loose from my pipes and the whole housekeeping staff was in an uproar. I need some "Yoga for Human Vegetables" guidance before I do myself further damage.