Show a Little Belly.2)Plank with Knee Touch.

Start in the push-up position. Extend your arms so your hands are directly beneath your shoulders. Your legs should be straight, with your weight on the balls of your feet. Keep your abs taut and your body in a straight line.

Pulling your abs in tightly, slowly touch your left knee to the floor. Return your left leg to the starting position, then repeat the move with your right knee. Repeat, alternating sides throughout the exercise.

Make it harder: Support your upper body on your forearms, with your elbows beneath your shoulders and your hands together. Your arms should form a triangle.

Denise Austin is the author of several books including Sculpt Your Body with Balls and Bands and the host of two Lifetime Television fitness programs.

Show a Little Belly.1)Crisscross.

Break out that belly-skimming tankini! This sizzling summer ab workout will tone and tighten your entire midsection in time for your next poolside barbecue.
The crisscross exercise targets both your obliques, the muscles that run down your sides, and your rectus abdominis, the long muscle running from your chest to your hips. The plank move goes a little deeper, firming the transverse abdominis, an underlying muscle that acts as a natural corset around your middle, pulling in your tummy and improving your posture.
And the leg movements in both exercises zero in below the navel. Having had two kids, I know that's an area that can always use some extra help!

Your Toning Program
Do two 30-second sets of each exercise. Work up to 1-minute sets. Keep the movements slow and controlled; rest for 30 to 60 seconds between sets. Do two or three sessions a week. (For best results, do daily sessions; this is safe because you're only lifting your body weight.)

Lie on your back with your hands behind your head. Your elbows should be pointing out to the sides. Bend your knees, placing your feet flat on the floor. Contract your abs, and lift both feet off the floor.
Extend your left leg while drawing your right knee toward your chest. At the same time, raise your shoulders off the floor, and bring your left shoulder across your body toward your right knee. Don't pull on your neck. Pause for a moment, then switch sides. Repeat, alternating sides throughout the exercise.

Leaning Plank.

Use the chair and get into a plank position. Take one leg and pull it against your chest, feel your abs. Tnen return it to a start position.
Then pull your leg towards your elbow, then cross it to another elbow. Hold a leg for about 5-10 sec.

(20 times each leg)

Oblique Stretch.

Sit on floor with both legs bent to the left in a comfortable position, right foot by left knee. Hold left shin with left hand, and extend right arm overhead. Look up at right hand as you gently stretch toward the left. Switch sides and repeat.

Seated Twist.

A. Sit on floor with legs in front, knees bent, and feet on floor. Grasp both ends of a 3- to 5-pound dumbbell and extend arms out in front of chest.
B. Lift left leg and, keeping arms straight, contract abs and obliques, twisting to the left and bringing dumbbell down toward floor. Return to start position, then twist to the right. Continue, alternating sides. Do 10
reps.

Side Plank Dip.

A. Lie on left side with right foot crossed over left and right hand behind head. Rest left forearm on floor perpendicular to body, elbow under shoulder. Lift hips so legs are off floor, keeping forearm on floor for support.

B. Slowly lower hips to 1 to 2 inches off floor. Do 10 reps. Switch sides and repeat.

Don't: Roll forward or hunch shoulders.

Roll-Out.

Kneel in front of a fitness ball and place sides of hands on ball, palms facing in. Keeping abs tight, roll ball away from torso, extending arms and lowering hips toward floor. Roll back to starting position. Do 8 to 10 times.
Easier option:Keep hips over knees.