Jason Klein, Author at Roman Fitness Systems

Jason Klein Jason Klein, MS, CSCS, is a Strength and Conditioning Coach and is the founder of Body of Purpose, a fitness mentorship company. Jason is also a Former Fitness Instructor to the US Marines and Navy.

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The Official Training Protocol of the U.S. Marines

How to look and feel as shredded as the Marines, from the guy who builds their training protocols.

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The Official Training Protocol of the U.S. Marines

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