This book has been approved by TWiEA - The World Isometric Exercise Association (www.TWiEA.com). This is the NEW, HUGE 800+ page 2021/22 edition of The Bullworker Compendium(TM) is the combination of the newly updated versions of both The Bullworker 90(TM) Course (2021 edition) and The Bullworker Bible(TM) (2021 edition) into a single book. It also includes information and compression spring data for all new 2021/22 range of Bullworker Series 3 models. This is the biggest printable book for its size Amazon can produce, and to save printing costs the only thing we have eliminated are duplicated sections, everything else remains the same. This way we can offer both books in one for less than the combined price of the two other books. Both books have big pictures, complete with useful arrows showing the direction to apply the force and movement. The Bullworker Compendium(TM) starts with The Bullworker Bible(TM), and at the end of that, it progresses seamlessly into The Bullworker 90(TM) Course. The Bullworker Bible is the definitive resource guide for all Bullworker(R) users, and it is the companion book for The Bullworker 90(TM) Course. It is a complete science-based user-friendly guide of how the Bullworker(R) should be used properly to deliver maximum results. It also shows you how to effectively use the Steel Bow(R). These books tell you about essential repetition-compression and speed control, correct breathing techniques, how Hooke's Law of physics applies to The Bullworker(R), and about correct biomechanics to deliver the best results. The Bullworker Bible(TM) is approved by the makers, and distributors of The Bullworker(R), at Bullworker.com. These books can also be used with the Bullworker X5, Bully Extreme, ISO 7x, and the Bullworker X7. Required Equipment: A Bullworker(R) Classic, or a similar device. Recommended Additional Equipment: Steel Bow(R), Bow Extension(R) kit, 2 x Iso-Bows(R), and the Bow Extension(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.