I bought the Buff Moms book after having my 2nd daughter three months ago. But the book was difficult to follow if I wanted to have any sort of a flow to my workout, so I ordered the DVD and I'm glad that I did. The workouts are broken down into 4 10-minute segments, easy to do and quick! I'm trying to do at least one of the 10-minute workouts a day and really do believe that in that short amount of time I can make a difference in my post-baby body. The author has really done her homework and knows what she's talking about, but I only know this because I also read her book. The instructor is easy to follow and pleasant and there's even a modified workout that you can follow.