The 4 x 4 Diet

4 Key Foods, 4-Minute Workouts, Four Weeks to the Body You Want

About the Book

Discover the 4 key foods and the 4-minute workouts that will change the way you 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 you how to get clean by reducing the 4 major hitches in most diets: sugar, starch, sodium, and alcohol. She also tells you how to get lean, using her 4-minute tabata workouts: 8 repititions of 20 seconds of high-intensity moves, then 10 seconds of rest.

Within 4 weeks, the average person will be able to reduce bloating and belly fat; gain increased muscle definition in the arms, legs, and stomach; improve cardiovascular endurance; and break sugar and sodium addictions. Complete with meal plans and recipes, The 4 x 4 Diet is perfect for anyone looking to streamline their body and lifestyle.
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Praise for The 4 x 4 Diet

"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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Excerpt

The 4 x 4 Diet

Chapter 1

The Road to Living Clean and Lean

I grew up in Sacramento, San Diego, and then Nashville, playing sports like soccer and swimming all along the way. I was constantly active starting at a young age, thanks in large part to my dad--he’s the one who introduced me to soccer, and he later coached my high school team. (I still play competitively, and I even met my husband on the soccer field. He’s also a personal trainer and fellow fitness freak.) My dad was always moving, whether it was tackling a 150-mile bike ride or opting for the stairs over the elevator. Our lifestyle wasn’t simply about being athletic--it was about being active.

As a teenager, I was eager to finish high school. I knew I wanted to share my passion for fitness with all kinds of people, so I graduated at sixteen and became a certified trainer within two years. By this point, I had honed the “lean” part of my clean and lean philosophy: The more you move, the more you stay lean. It was simple and clearly effective--all anyone had to do was look at my dad’s and my trim physiques, which we attributed to our active lifestyle. I preached this motto often.

But I was also eager to keep challenging myself physically. So when I was twenty, I enlisted in the Marines, and I served two tours in Iraq between 2003 and 2005. The day before I was scheduled to leave for my second deployment, a group of friends and family gathered at my parents’ house for a going-away cookout. At one point, my dad walked over to my mom and told her that his chest hurt. The two of them went inside, and she turned around to get something for him--and that’s when he suddenly fell over and died. Instantly. The doctors later told us that he was dead before he even hit the ground. Within three minutes, he went from feeling ill to suffering a fatal heart attack.

My dad was just fifty-two when he passed away. He had been trim and strong his whole life--he’d thrived on being physically active--and he’d never had any major health issues. So how did this happen? The answer was crushing: for more than five decades, he had eaten whatever he wanted, whenever he wanted. He’d never been told to watch his diet, to eat certain foods, and to avoid certain others. For me, it was the hardest way to learn that being thin doesn’t necessarily mean being healthy

My father’s sudden death changed everything for me. After I took ten days of military emergency leave, duty called. It was heartbreaking to leave my family--especially my mom--when the pain was still so fresh, but I had to follow through on my commitment and return to Iraq.

Upon arriving, I threw myself into work. This was 2004, and Fallujah had been shut down. When Iraqi citizens were finally being let back in the city, every individual had to be searched. Men weren’t allowed to physically touch the women, so the Marines’ first-ever all-female platoon was created--and my superiors appointed me as the sergeant to train and lead that search force. One of my main duties was to look for suicide bombers, contraband, and guns at various checkpoints around Fallujah. It was intense--and I loved every minute of it. I actually tried to extend my stay, but my commanding officer made me come home.

After returning to Nashville, I finally started to process my dad’s death. My way of doing this was by learning everything I could about food and how it affects your body. I took nutrition seminars, experimented endlessly with recipes, and eventually became certified as a nutrition coach. One of my biggest revelations was that I began to see food as fuel for your body--not as a reward or as a hobby--and I set out to discover the most efficient ways to use it. The answer, in short, is to maintain a diet with as many whole foods and as few processed foods as possible. Fresh fruits and vegetables, lean meats, legumes, nuts--these are what your body should be running on. My findings ultimately became the “clean” part of my clean and lean philosophy.

Over the next few years, I began training elite clients and instilling in them the virtues of being clean and lean--not just one or the other. In my own kitchen, I continued to experiment with all kinds of recipes and ingredients, working toward the cleanest and best-tasting diet possible. The process is ever-evolving, but I’ve pinned down four key eating habits: cutting out starches at night and cutting back on your sugar, sodium, and alcohol intake. Practicing all four of these habits regularly has produced the most dramatic effects on my own body and my clients’ bodies. Meanwhile, I also discovered an innovative four-minute workout called tabata that shocked me with its (science-backed) effectiveness. 

Grabbing onto the “4” element of each discovery, I developed the 4 × 4 Diet. The combination of these four clean eating habits and four-minute workouts has been a game-changer for me as well as for my clients, who span just about every age, body type, and fitness level. Listen, I am always excited to eat healthy and try new exercises. It’s my job, it’s my passion, and it’s also my lifestyle. But the 4 × 4 Diet has gotten my clients--people who have struggled with weight loss and motivation for years--to be excited to clean up their diet and work out. And now I want to share it with you.

About the Author

Erin Oprea
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 has been Carrie Underwood's personal trainer since early 2007 and has trained Maren Morris, Kacey Musgraves, Kelsea Ballerini and more, earning her the title of "Trainer to the Stars." She currently lives in Nashville with her husband and two boys. More by Erin Oprea
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About the Author

Carrie Underwood
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 has been Carrie Underwood's personal trainer since early 2007 and has trained Maren Morris, Kacey Musgraves, Kelsea Ballerini and more, earning her the title of "Trainer to the Stars." She currently lives in Nashville with her husband and two boys. More by Carrie Underwood
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