Book excerpt: This book has been approved by TWiEA - The World Isometric Exercise Association (www.TWiEA.com). Isometric exercise has been a part of almost every system of the martial arts ever devised. Even before isometrics were studied scientifically and modern science-based training techniques were devised they have been taught and practised in one form or another for thousands of years. It was the great Bruce Lee and his love of isometric exercise who ensured that this system would forevermore be famously linked to all types of martial arts training. This book contains a valuable resource of practical isometric exercises designed to build serious strength, muscle and martial arts 'firepower' needed by all types of martial artists. More importantly, isometric exercise builds solid, hard, practical muscle and not the bodybuilder type of bulk that would seriously restrict a martial artist. One of the authors is recognised as being one of the leading authorities on isometric exercise, isometric exercise science and as a practitioner of several different styles of martial arts for almost 50-years. Among his many awards and accolades, he is a WKA 8th Degree Black Belt and a recipient of a WKA Lifetime Achievement Award. This gives him a unique and extremely valuable insight into science-based strength training and conditioning for the martial arts.