Authors

Mike Marvel's Bio:

Mike Marvel was a muscle building instructor who participated in the isometic boom of the 1960s by offing an isometric course called "Dynaflex Isometrics."

Online books available from Mike Marvel:

  • 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 ...

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