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  • the only thing that concerns me is the hard lockout of the knees at the end of each rep, its almost like a hyperextension, but its a good vid and still informative. thanks

  • crazy how it's all in the mind and how one change in focus will Kalos Sthenos the heck out of your swing form. trying this with a student this morning who is a 1 on trunk stability and i'm thinking that lack in stability is taking away a lot of power and stability in her swing. thanks geoff

  • Does it increase sport performance though(i.e. vertical jump, sprinting, etc.)?

  • Fantastic!!! I like the new swing.

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