"His endurance is phenomenal...at the end of the fight, he's still giving interviews like he's fresh...that is just a phenomenal...he sets a great bar for boxers and strength & conditioning coaches to follow...I try to push my guy like that," stated Quan Paxton, Strength & Conditioning coach of unified light heavyweight champion Sergey Kovalev, who explained why he pushes Kovalev to train like undefeated pound-for-pound king Floyd Mayweather.
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