You did it again, didn't you? You overindulged during the holidays, grazing the office buffets and family dinners with one too many desserts, and drinking maybe a few too many cocktails. Then, suddenly, one day you woke up with an extra 10 pounds staring back at you in the mirror.

So you made a resolution to trade your debauchery for the Step Mill and clean eating—again—knowing it may take months to get back to where you were. But what if you don't want to wait that long? That's where we come in.

With the help of trainer and nutritionist Kim Oddo—who has worked with some of the world's top figure and bikini competitors—we'll show you how to get your buff bod back in only four weeks with this comprehensive crash-course training and nutrition program.

Yes, it'll have your body sweating and (at times) your stomach grumbling, but in 28 days you'll be back to where you were before the holiday season began—if not better.

Four Weeks To Fit: Weeks 1-2

You begin the first two weeks with upper and lower-body circuits, split by cardio spurts and ab gashes. This starts the Summer Shred!

Four Weeks To Fit: Weeks 3-4

In the last two weeks your fitness level will be tested, broken, tested and improved so you can dominate the gym and Shred this Summer!