3/4 Sit-Up vs Cross-Body Crunch

Lie down on the floor and secure your feet. Your legs should be bent at the knees.

Place your hands behind or to the side of your head. You will begin with your back on the ground. This will be your starting position.

Flex your hips and spine to raise your torso toward your knees.

At the top of the contraction your torso should be perpendicular to the ground. Reverse the motion, going only ¾ of the way down.

Repeat for the recommended amount of repetitions.

Lie flat on your back and bend your knees about 60 degrees.

Keep your feet flat on the floor and place your hands loosely behind your head. This will be your starting position.

Now curl up and bring your right elbow and shoulder across your body while bring your left knee in toward your left shoulder at the same time. Reach with your elbow and try to touch your knee. Exhale as you perform this movement. Tip: Try to bring your shoulder up towards your knee rather than just your elbow and remember that the key is to contract the abs as you perform the movement; not just to move the elbow.

Now go back down to the starting position as you inhale and repeat with the left elbow and the right knee.

Continue alternating in this manner until all prescribed repetitions are done.