I am a beginner and do not know where to start with the Cathe videos. Any suggestions would be appreciated. I have some background in weight training, kept in shape for most of my life with resistance training and running. I had a baby about 14 months ago, found out that my back had misaligned due to my pregnancy. My back is fine after seeing a chiro and some physical therapy. I can do all that I used to do, just need to strengthen my lower back some. I am ready to burn off the last of the baby weight. But mostly just want to get back in shape. Where is a good starting point? What videos are good for a beginner and how often and what manner should they be used? Thanks.