Celebrity trainer and former marine Erin Oprea has created the 4 x 4 Diet, a groundbreaking diet and fitness program used by celebrities, such as Carrie Underwood, Jennifer Nettles, and Lee Ann Womack, now in paperback.
ERIN OPREA is a NESTA- and AFAA-certified personal trainer as well as a former marine who has served two tours of duty in Iraq. She trained Carrie Underwood from 2007 to 2018, and has earned the title of "Trainer to the Stars." She currently lives in Nashville with her husband and two boys.
"I've had the pleasure of working with Erin for many years now and
her approach to food, fitness, and oveall health has not only been
effective for me, but practical as well. Erin has taught me a lot
about physical fitness and has helped me move from 'dieting' to
maintaining a consistent healthy lifestyle. The 4 x 4 Diet is a
philosophy that anyone can implement into their daily lives...It's
not a diet...it's a lifestyle."
--Carrie Underwood
"Erin's approach, like most successful ideas, is simple and
realistic. The more you apply her principles of food and exercise,
the more success you will have…. She got me back on track after the
birth of my son. I saw my strength and stamina increase and watched
my body change for the better."
--Jennifer Nettles
"In the wake of all the books selling "magic quick fixes" for
health and weight loss, Erin's simple yet effective 4 step
nutrition plan has proven to our family that she knows what she is
talking about. Her philosophy is simple yet life changing for
all who will take her advice. Her nutrition tips, combined
with being active (which she has proven to us really can be fun!)
is a sure combination for achieving your goal - whether weight loss
or just overall better health. And thankfully, her program is
not just for young folks and "boot camp" types but for middle agers
like Alan and I!"
– Denise Jackson and Alan Jackson
"I love doing tabatas. They, along with Erin's 4 principals, have
worked for me like nothing before. Fitness and nutrition can be fun
and easy when you're working with someone like Erin!"
-- Leann Womack
“It’s hard to find time to work out on the road or while promoting
a record. Erin taught me how to incorporate fitness and
nutrition into my lifestyle. She is super encouraging and
really cares about the people she trains. She's more than my
trainer. She's a friend.”
-- Lauren Alaina
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