Robert,
Thanks so much for your reply. It’s comforting to know I’m not the only one who has experienced this. I will definitely try to make sure I’m replenishing my electrolytes, I don’t think I’ve done a good job at that. I talked to my one of my yoga instructors today, and she said it could be caused from hormonal type detox caused by the backward bending. Whatever it is caused from, it is certainly unpleasant. Looking forward to “happy for no reason” stage.