I am not so sure about this book. The idea is fantastic, but in reality and actuality, I never had time for these workouts. I tried going to a park with my baby in a stroller, and of course it was the middle of February, the path around the lake was completely a sheet of ice, and I looked like a moron trying to exercise with my baby in a stroller. In theory, it sounds good. But in actuality, I don't have the self-confidence to pull off the workouts, especially in public. And in the winter, it seemed more torturous to my baby to be out in the elements...