From Bodybuilding-Apps.com: Dumbbell Muscle Workout Plan! We've got nothing against barbells, but dumbbells offer a lot more versatility. You don't need much space, and you can find them anywhere—from the dinkiest hotel fitness center to your uncle's garage. We've put together the ultimate dumbbell-only routine—one you can do with just a few pairs of weights. Using dumbbells allows you to train one side of your body at a time, which is great for curing any strength imbalances you've developed. And because each limb moves independently, your core has to brace harder to prevent you from tipping to one side. Hello, six-pack! Grab a pair of dumbbells and build the body of your dreams!!