Front plank on ball:
Rest your elbows on a flat bench and the balls of your feet on an exercise ball. Contract your abs so that your body is parallel to the floor and there is no dip in your lower back. Hold the plank position for 60 seconds.
Side crunch on ball:
Firmly place your right hip on a Swiss ball and lean into the ball; ensure that your torso is off the ball. Support yourself by pressing the soles of your feet against the bottom of a wall. Place your hands by your ears, and contract your left oblique muscles, lifting your torso [...]
Reverse Crunch:
Lie down on a bench with your knees bent and your upper legs at a 90° angle with your torso; grab the bench above your head for stability. Use your abs muscles to pull your knees toward your chest until they reach your elbows. Hold the crunch position for three seconds and return to [...]
Windshield wipers:
Place a mat on the floor and lie on your back with your arms in the “T” position for stability. Lift your legs so that they are perpendicular to the floor and rotate your hips, keeping them in contact with the floor, so that your legs move from left to right, in a “windshield [...]
Legs/Arms reach:
Place a mat on the floor, lie down on your back and extend your arms above your head. Simultaneously lift your arms and legs toward the ceiling, until your fingertips touch your toes (if you can). Slowly return to the starting position. Do 10 reps.
Wood-chop:
Add some weight (try 25 pounds) to a multipurpose pulley machine and grasp the handle attachment at shoulder height with your left hand. Square yourself to the machine and take a few steps to the right (away from the machine) until there is sufficient tension. Stand with your feet shoulder-width apart, bring your right arm [...]
Hip Raise/Leg Raise:
Lie down on a flat bench with your legs up and perpendicular to the bench (hold the bench behind your head for stability). Lift your hips slightly off the bench by contracting your lower abs, hold for three seconds, and lower your hips. Keep your back flat on the bench, your legs straight [...]
Russian twist:
Instructions: Sit on a decline bench, with your legs firmly under the pads. Lean back slightly, so that your thighs and torso form a 90° angle. Extend your arms in front of you, so that they form a 90° with your torso, and clasp your hands together. Keeping your back straight, your chest out [...]
Twist and crunch:
Instructions: Place a mat on the floor and lie down on your back, with your hands by your ears and your legs perpendicular to the floor. Twist your hips slightly by contracting your left oblique muscles; hold that position. Using your abs, bring your right elbow across your body to the outside of [...]