Study of Butterfly - Details and Key Points with Michael Phelps
Monty Hopkins
Both videos offer important key Butterfly concepts. Something to help everyone from beginner to world class swimmer.
From MySwimPro:
https://youtu.be/VQpFhM18zu4
Michael Phelps and his coach Bob Bowman
https://youtu.be/T7gNPwRjgNQ
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