This book has been approved by TWiEA - The World Isometric Exercise Association (www.TWiEA.com). Since this book is now over 650 pages and Amazon set minimum sale prices due to high printing costs associated with big books, we are selling it for the minimum price Amazon will allow. It can also be used with the new range of 2021/22 Bullworker Series 3 models. This is the 2022 updated Bullworker 90(TM) Course and is the companion book to The Bullworker Bible. Both books are approved by the makers of The Bullworker(R). The Bullworker 90(TM) Course is the essential 90-day/12-week course for all Bullworker(R) users. It is a science-based, user-friendly, step-by-step instruction course designed to increase strength, fitness, and how to grow muscle, and increase power over a 90-day/12-week period, it has big pictures complete with useful arrows showing the direction to apply the force and movement., It shows you how to progressively increase the force, pace, and intensity through the exercise sessions over the 90-days, and includes isotonic/Isometric exercise combinations, and multi-angle isometric exercise combinations. Each week has a detailed note section containing suggestions about exercise days, and rest times etc. This means that you know exactly what to do, and when to do it. The Bullworker 90(TM) Course also contains alternative/extra exercises using the Iso-Bow(R) and the Bow Extension(R) to increase the range and effectiveness of The Bullworker(R). The Bullworker 90(TM) Course can be used with the Bullworker(R) Classic, the Steel Bow(R), the Bullworker X5, the Bully Extreme, the ISO 7x, and the Bullworker X7. Required Equipment: A Bullworker(R) Classic, or a similar device. Recommended Equipment: Steel Bow(R), Bow Extension(R) kit or similar, 2 x Iso-Bows(R). 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.