The 4 x 4 Diet: 4 Key Foods, 4-Minute Workouts, Four Weeks to the Body You Want

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.

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 earned the title of "Trainer to the Stars." She currently lives in Nashville with her husband and two boys.