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.