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  • Source of Tony’s 5 Day Challenge structure?

    Posted by Daniel M on October 20, 2025 at 12:01 pm

    Hi Forum members!

    Could anyone recall the researcher at Stanford who inspired Tony Castro to create the 5 Day Challenge system? EG, the person who developed the complementary strategy of Learning Lick, Technique, Jamming, Rhythm, etc?

    Moose408 replied 5 months ago 3 Members · 3 Replies
  • 3 Replies

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