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Golf speed training system used to biohack your clubhead speed. The Stack System unlocks precision speed training from golf's leading biomechanist, Dr. Sasho MacKenzie that was previously reserved for...

That's the link, but there's not actually much content there. You access the Learning Library through the app.

 

Subscribers also got, this morning, six emails with some information on GRF (ground reaction forces):

stacksystem_grf_email.jpg

  • Informative 1

Erik J. Barzeski —  I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • AuthorLowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

Check Out: New Topics | TST Blog | Golf Terms | Instructional Content | Analyzr | LSW | Instructional Droplets

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