Travelle Gaines is perhaps best known in the athletic training community for his work with NFL stars, including LeSean McCoy, Andrew Luck, Antonio Brown and Marshawn Lynch. But he also works with Manny Pacquiao on strength and conditioning. As Pacquiao prepares to face Floyd Mayweather on May 2, Gaines has put an emphasis on Manny's footwork. Here's an overview from Gaines on what it takes to train for a fight of this magnitude:

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