Dynaflex

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John e. Peterson
John e. Peterson wrote...
about Dynaflex

Mike Marvel’s Dynaflex course was popular from the early 1960s to the mid-1980s, and was the first course to teach Isometric Power Flex Contractions—which are featured in John Peterson’s own Isometric Power Revolution.

Often compared to the Charles Atlas course in terms of its advertising style, the Mike Marvel’s Dynaflex course did contain some of the Dynamic Self-Resistance exercises or Power calisthenics that Charles Atlas taught.

Nonetheless, the Dynaflex course provided a great workout with a distinct twist on Isometrics that was later repackaged and promoted by Mike Dayton in his “Chi Mind Control” course.

The edition we feature here is from the original 1961 edition and features photographs of a model who is a dead ringer for actor Tony Curtis—who was incredibly popular at the time.































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