It doesn't matter how strong your abs are... you can't show off sexy muscle tone if you have a layer of fat covering it. Start your tummy-trimming program by banishing fatty meats, processed carbs and high-sugar foods from your diet. Then add in these exercises for good measure.

1. Weighted Roll-Ups: Lie flat on your back, placing your feet on the floor hip-distance apart. Holding an 8 lb. dumbbell with both hands, reach your arms long above your head extended alongside your ears on the floor. Exhale as you contract your abdominals and lift your arms, head, neck and chest up off the floor, one vertebrae at a time, keeping your spine rounded. At the top of the roll-up, inhale and pull your abs in tight as you begin to roll back down to the start position. Perform two sets of 8 repetitions.

2. Side Bends: Stand tall with both arms at your sides, holding an 8 lb. dumbbell in your left hand. Slowly bend to the left, so that the weight drops toward your knee. Return to the starting position. Repeat 10 times before switching the weight to your right hand.