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Go behind the scenes at Kacy Catanzaro and Brent Steffensen’s training gym

Take a look at the Alpha Warrior gym keeping these Ninjas on their toes.

Big names need big equipment to train on. Kacy Catanzaro and Brent Steffensen are no exceptions. Together they are managing partners at the Alpha Warrior Proving Grounds in San Antonio, TX.

Brett Stewart of Mud Run Guide got to pay a little visit to this impressive course. Brent and Kacy put him through his paces while showing off the strength and determination that has made them American Ninja Warrior legends.