Duffy Gaver

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About the Author

JAMES "DUFFY" GAVER is a former Marine sniper and ex-Navy SEAL turned celebrity personal trainer. His A-list clients include Ashton Kutcher, Brad Pitt, Scarlett Johansson, Adam Sandler, Channing Tatum, Chris Hemsworth, and Chris Pratt to name a few. He has worked in the film industry for many years.