Abdominal exercises you can do to strenthen your core.Abdominal exercises you can do to strenthen your core.

Slant Board Reverse Crunch

Lie face up on slant board, with feet near floor. Stabilize body by holding on to foot pads. Lift legs up with knees slightly bent. In a controlled motion, curl lower body up by lifting hips off board. Contract abdominals fully without compromising form. While maintaining the controlled motion, return to starting position. Do not allow muscle to relax before next repetition.

Seated Leg Tucks

Sit sideways on a bench and grasp the edges of the bench for support. With bent knees, raise your legs slightly and then straighten them. Lean backward as balance requires. Next, lift your knees up towards your chest while keeping your lower legs pointed downward and flexing (tightening) your abs as hard as you can. Keep continuous tension on the abs throughout this movement. This works both upper and lower abdominal muscles.

Medicine Ball Lying Oblique Twist

Lie face up on floor, knees bent with feet on floor and neck straight. Grasp medicine ball and hold at chest level. In a controlled motion, keeping neck straight, curl upper body up. From this position, twist your torso to the left. Contract abdominals fully without compromising form. While maintaining the controlled motion, return to starting position and continue through to your right side. Focus on really twisting your torso and feeling the contraction when twisiting your torso.

Roman Chair Side Bends

Lie on your side on a Roman Chair or use a bench. Your hips and legs are supported by the Roman Chair or bench, and your trunk is off the bench. In the case of a normal bench, you will need someone to hold your feet. In the case of the Roman Chair, hook your feet under the heel pad. Cross arms over chest. If using weight, hold weight plate at chest level. Lower the body down, maintaining this sideways position. Go as far down as is safe and comfortable and return to the starting position.

Leg Tucks on the Floor

Lie on your back with your hands at your temples. Lift your upper body as if doing a sit-up. Simultaneously, bring your knees up as far as possible towards your chest. Try to touch elbows to knees. Lower your back to the starting position. For best results, perform this exercise in one slow and controlled motion.

Medicine Ball Russian Twist Standing

Primary Muscle Group: Abdominal Obliques

Muscle Groups Worked in This Exercise:   Obliques and Lower Back

Preparation: Stand straight up with back and head, holding a medicine ball extended straight out from your core front region.  Make sure that your elbows are slightly bent and you keep your head and back straight during the entire exercise movement.

Breathing:  Breath out on the contraction of the muscle and breath back in on the way back to the start position.