Spark is great, because you enter your information and it gives you menu plans to use all ready figured out for you or you can sub from the drop down menus and choose a different one......they have a book out as well as CD for workouts.....just got these so not sure how effective they are as yet., but they have a different kind of work out everyday of the week........but I have watched some form the website and seem like something good and they do not go fast.
I am not aff in any way....just want to say it a great site to join and it is all "FREE"!!