Joan Pagano's first love is yoga, and it shows in the type of exercises in this book. She also appears to have a cross-disciplinary interest in physical therapy; I recognize several exercises (all excellent) which I learned from physical therapists in recovering from injuries.
I give Ms. Pagano an A+ for both clarity and variety. The book has clear descriptions of exercises, and excellent photos with a white dotted line showing the muscles each exercise is supposed to work. I was able to understand how to properly perform several stretches which had been unclear in other books. The variety is excellent, including many exercises for rubber resistance bands and for those big, fun, colorful stability balls. I was pleasantly surprised to find several pages on exercises for improving posture.
Where the book really shines is in providing a safe, approachable beginning for women who are either very out of shape or recovering from illness. For example, she de-scarifies the push-up, that ultimate symbol of military-grade fitness, by showing four less physically demanding variations in order of gradually increasing difficulty.
But I do have one major caveat: If you're hoping for a serious weight training book--which will help you build muscle--this is not the one. Ms. Pagano seems to seriously underestimate women's strength. Doesn't she know we lift grocery bags, babies and suitcases in airports? The section on push-ups, for example, fails to include the standard 'man's" push-up. I would think that working through the other four would be with a goal of getting there, to the most difficult one. Nowhere in the book does she ever show a barbell, and her choice of dumbbell weights (mostly 3-8 lbs, with a maximum of 15 pounds recommended once in the book for lat rows) is almost insulting. Three to five pounds might be okay for a beginner looking to learn proper form, but after a few weeks most women can lift a lot more. Lifting weights which don't challenge your muscles will just waste your time, and very likely lead to discouragement when you see no results.
I highly recommend this book for anyone looking for yoga and physical-therapy style exercises for general well-being and injury prevention. It would also be useful as an adjunct to a serious weight-training program found elsewhere--just take the weight recommendations with a grain of salt and listen to your body instead.