Book excerpt: Become your own HIIT trainer with this unique book! This book provides you with a full explanation of what you need to get started with the newest fitness trend and contains various guides and charts to help you with your training. Learn about the incredible benefits this HIIT training method gives you and find the workout that suits you best. The author, who served in the British Army for five years, has developed over 20 specialized HIIT workouts with lots of illustrations and step-by-step guides on how to perform the individual exercises. Every workout in the book will have an intensity g.