*received for free from netgalley for honest review* Great DK book, they always have great, high quality info and imagery, this book didn't disappoint!

The pictures are great. The book is short and to the point. It doesn't have a lot of frills and unnecessary filler information in it to extend the length of the book. I thought that was great.

It says it is for beginners but a lot of the terms and exercises are for intermediate level. It's a good book for someone who is moderately athletic and wants to amp up their workouts.

As a personal trainer, I'd recommend this is a tool to educate yourself on the benefits of HIIT but it is not an end all be all book.

I really liked this book. I feel that I am more informed about the effects of HIIT on my body and how to properly execute multiple common HIIT moves and what areas of the book it utilizes. I highly recommend this book to anyone who wants to learn about how and why HIIT is considered a superior exercise by all those who enjoy it

This book explains HIIT using language and graphics that are easy for laymen to understand. The benefits and purpose of HIIT style exercising as well as best practices for maximizing workouts are illustrated with graphics and digestible information bits. I like the Slim Goodbody style illustrations that show which parts of the body each exercise is targeting. Variations and common mistakes are included for many of the exercises. I did have some difficulty deciphering what exactly I was supposed to be doing for some of the exercises, and I am certified to teach more than one style of yoga and no stranger to the gym. The training planner and workout routines were easy to follow. This is a clear, concise beginners guide for those interested in starting a HIIT routine.

Science of HIIT is well-researched and science based. I love that! However, as I read the book and looked at the diagrams, I was a bit discouraged that the author wrote the book for people who go to gyms to work out. This book isn't really intended for an audience who have a home gym. Well, not a fully loaded home gym. Most people looking for fitness books are looking for exercises that translate. Since I have a solid exercise background and fitness certifications, I am able to translate the exercises, but that requires knowledge.

Another weakness of this book is that a few of the plyometric exercises have a little move by move diagram at the bottom of the page (which I love), but others don't have that. There were a few exercises that I was a bit confused on, since I'd never seen them before, and I wanted to see a more complete transition of move to move to complete the exercise.

Although this book offers suggestions for beginners, I would NOT recommend it for beginners. Many of the exercises are intermediate to advanced and require fitness and coordination levels that most beginners don't have. But, if you're a reader who has a gym membership and you're intermediate to advanced, this is a good book for you.