This book has been approved by TWiEA – The World Isometric Exercise Association (www.TWiEA.com). Currently, the entire range of books written by Brian Sterling-Vete and Helen Renee Wuorio about the Bullworker, isometrics, and other related forms of exercise are the only books to have received this approval together with TWiEA’s 5-Star Rating. The Bullworker 90™ Course is the essential 90-day/12-week course for all Bullworker® users, and it’s the companion book to The Bullworker Bible, approved by the makers, and distributors of The Bullworker. The Bullworker 90™ is a 400+ page, science-based, user-friendly, step-by-step course designed to increase strength, fitness, grow muscle, body-build, and increase power over a 90-day/12-week period. New exercises are added almost every week, with complete routine changes every two weeks. Each week has a detailed note section, together with suggestions about exercise days, and rest times etc., so that you know exactly what to do, and when to do it. Step-by-step, week-by-week instruction* Progressively increasing intensity over 90 days* Routine changes every two weeks* Isotonic and Isometric exercise combinations* Multi-angle isometric exercise combinations. The Bullworker 90™ Course can be used with the Bullworker® Classic, the Steel Bow®, the Bullworker X5, the Bully Extreme, the ISO 7x, and the Bullworker X7. The Bullworker 90™ Course also contains alternative/extra exercises which incorporate the use of the Iso-Bow®, and the Bow Extension® to increase the range and effectiveness of the device. Required Equipment: A Bullworker® Classic, or a similar device. Recommended Additional Equipment: Steel Bow®, Bow Extension® kit, 2 x Iso-Bows®.