Erin Oprea takes "GMA" audience members through some workout moves and offer tips from her book, "The 4 x 4 Diet."



Carrie Underwood's Personal Trainer!

Erin Oprea takes "GMA" audience members through some workout moves and offer tips from her book, "The 4 x 4 Diet."

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THE 4X4 DIET

Discover the 4 key foods and the 4-minute workouts that will change the way readers look and feel in just 4 weeks. Celebrity trainer and former marine Erin Oprea's motto is "lean and clean." Her unique 4 x 4 diet shows readers how to get clean by reducing the 4 major hitches in most diets...
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I've worked with Erin for several years and have always been so impressed with her work ethic. She is truly dedicated to her clients and their health and well-being, and I have even recommended her to several of my friends. Through working with Erin, I always feel like I am at my best and ready for anything.
~Carrie Underwood
Erin was instrumental in helping me get back into shape after having my son. She's a wonderful collaborator and keeps things understandable and interesting so you don't get bored. Not to mention, if you want her to, she'll kick your [bum]. (And if you don't, she can just as easily offer you a gentler day too.) Whatever changes you want to make, she'll customize the workout.
~Jennifer Nettles





Experience your city in a whole new way!

Led by celebrity trainers Erin Oprea and Shawn Booth, CitySTRONG combines the camaraderie of group workouts with the best outdoor spaces in your city.
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