I like this book because it offers some exercises but did not give 5 stars because the exercise routines are not well explained. In other words, this book will not substitute the knowledge that a personal trainer or nutritionist can share. If this is your sole interest, you may need to research other books/videos. However, this book places importance on resting and good form as a dummy proof way to avoid injuries, and this is very important, hence the 4 stars. Also, lots of information on equipment and anatomy.