Jack Barry (@johnb_sp) 's Twitter Profile
Jack Barry

@johnb_sp

JB Performance / I Build Elite Pitchers / FREE MECHANICAL ANALYSIS ⬇️

ID: 907431892491935748

linkhttps://hoo.be/johnb_sp calendar_today12-09-2017 02:33:17

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Jack Barry
@johnb_sp

3 months ago

Your end result doesn’t give a damn about the science. Point to any study, research paper or beta test and apply it to yourself. Works? Cool. Doesn’t? Who cares. The results are the only thing that matters. Be your own case study.