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High Intensity Business

High Intensity Business (formerly Corporate Warrior) is a high intensity strength training podcast designed to help HIT enthusiasts to achieve their fitness goals and HIT business owners and personal trainers to build a successful HIT business. The podcast helps individuals and personal trainers to optimise results for themselves and their clients with evidence-based information on exercise, diet, and lifestyle. Moreover, the podcast explores every aspect of starting and growing a high intensity training business including personal training, sales, marketing, operations, hiring, retention, pricing and packaging, financial management, exercise equipment, leadership, productivity, and much more. Previous guests include Dr Doug McGuff, Drew Baye, Skyler Tanner, Fred Hahn, James Fisher PhD, James Steele PhD, Luke Carlson, Adam Zickerman, Kyle Recchia, Adrian Antigua, Bill Crawford, Dorian Yates, Simon Melov PhD, Roger Schwab, Robb Wolf, Mark Sisson, Steve Maxwell, and many, many more.

Nov 19, 2018

Dr Jurgen Giessing (email – giessing[at] is a professor of sports science at the University of Koblenz-Landau. After graduating from the University of Marburg with a teaching degree and a doctor’s degree in pedagogy in 1997, Jurgen worked as a sports therapist and P.E. teacher and continued his research about muscle hypertrophy training which lead to his doctoral dissertation in sports science at the University of Tübingen in 2002.

Since 2007, Jurgen works at the University of Koblenz-Landau where he continues his research about muscle hypertrophy training and its health related effects. His book HIT, first published in 2006, became a best-seller in Germany. His new book High Intensity Training explains why staying in shape requires very little training time and that it is the quality rather than the quantity of training that makes the difference.

Jurgen has conducted several studies on High Intensity Training with sports students, seniors, type 2 diabetics, and identical twins. There has never been an injury-related drop out (no surprise there!)

A few caveats on this one:

  • I believe I have miscalculated my calorie intake (fat is dense!). In this podcast, I report that my calorie intake in typically <2,000 calories a day, but it was likely at least 2-300 calories more and closer to 2,500 per day.
  • I recorded this podcast a long time before my episode with Dr Doug McGuff on “bulking”, where Doug further reinforced Jurgen’s point about the problems chasing a calorie surplus on a daily basis. I have since stopped calorie counting and currently eat a high protein diet to satiety each day (typically 2 large meals per day).

In this episode, we cover:

  • The origins of multiple set training
  • The problems with research comparing number of exercise sets
  • How to manage calorie and macro-nutrient intake for gain muscle
  • … and much, much more

Learn HIT Business and Personal Training from the best in the industry HERE

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As well as being utilised by many HIT trainers to deliver highly effective and efficient workouts to their clients, ARX comes highly recommended by world-class trainers and brands including Bulletproof, Tony Robbins, and Ben Greenfield Fitness. To find out more about ARX and get $500 OFF install, please go to and mention Corporate Warrior in the how did you hear about us field – Learn more HERE

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