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 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 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. In the exercise section, there are arrows clearly showing the direction in which the force should be applied. One of the authors is recognised as one of the leading authorities on isometric exercise science and has also been 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 martial arts. NOTE: The authors, Brian Sterling-Vete and Helen Renée Wuorio are exercise specialists who have worked closely with the NHS Innovation Team at the Greater Manchester Mental Health NHS Foundation Trust on two major isometric exercise trials during 2020. This was an outstanding success, and they are now moving into a third much bigger trial before looking towards an expansion into more sectors of the NHS across the UK. TWiEA will be involved to conduct isometric exercise instructor training programmes for key NHS staff.