Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Isolation 
 
Tips: Using a decline bench, position yourself with your feet locked in at the top. Your upper body should be raised off the bench so that you have to contract your abs just to stay in place. Place your hands on each side of your head, over your heads. Don’t lock your fingers! Raise your body slowly while you contract your abs. Crunch up until your elbows are on either side of your thighs. Hold and flex your abs, then slowly lower your body back to the starting position. Don’t lower your body all the way down the to bench! If you can, hold a weight plate across your chest for added resistance.

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Isolation 

Tips: Lie flat on your back with your feet flat on the ground, or resting on a bench with your knees bent at a 90 degree angle. If you are resting your feet on a bench, place them three to four inches apart and point your toes inward so they touch. Place your hands lightly on either side of your head keeping your elbows in. Don’t lock your fingers behind your head! Push the small of your back down in the floor to isolate your ab muscles. Begin to roll your shoulders off the floor. Continue to push down as hard as you can with your lower back. Your shoulders should come up off the floor only about four inches, and your lower back should remain on the floor. Focus on slow, controlled movement – don’t cheat yourself by using momentum!

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: Exercise Ball
Mechanics Type: Isolation

Lie flat on your back with your feet resting on an exercise ball with your knees bent at a 90 degree angle. Place your feet three to four inches apart and point your toes inward so they touch. Place your hands lightly on either side of your head keeping your elbows in. Don’t lock your fingers behind your head! Push the small of your back down in the floor to isolate your ab muscles. Begin to roll your shoulders off the floor. Continue to push down as hard as you can with your lower back. Your shoulders should come up off the floor only about four inches, and your lower back should remain on the floor. Focus on slow, controlled movement – don’t cheat yourself by using momentum!

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Isolation

This variation makes it tougher than regular crunches. Lie on the floor with your knees bent. Keep your feet flat on the floor. Stretch your arms overhead and cross your palms. Curl your upper body forward and bring your shoulder blades just off the floor. Keep your arms aligned with your head, neck and shoulder. Don’t move them forward from that position! Slowly lower down after squeezing your abs tight!

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Compound

Lie on your back and bend your knees about 60 degrees and keep your feet flat on the floor. Place your hands loosely behind your head. 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. Do one side for all your reps, then switch to the other side. Try to bring your shoulder up towards your knee rather than just your elbow.

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: Cable
Mechanics Type: Isolation

Kneel below a high pulley. Grasp cable rope attachment and place wrists against the head. Flex hips slightly and allow the weight to hyperextend the lower back. With the hips stationary, flex the waist so the elbows travel toward the middle of the thighs. Return and repeat.

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Compound.

Begin a pushup position but with your elbows on the ground and resting on your forearms. Your elbows should be bent at a 90 degree angle. Arch your back slightly out rather than keeping your back completely straight. Raise your glutes toward the ceiling, squeezing your abs tightly to close the distance between your ribcage and hips so you end up in a high bridge position. Lower back down slowly to your starting position. Repeat. Don’t let your back sag downwards.

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Compound

Tips: This is like the Reverse Crunch but with a longer range of motion. Outstretch your hands to your sides with your knees bent at a 60 degree angle and your feet just off the floor. Using your lower abs, roll your pelvis backward to raise your hips off of the floor. Your knees will be over your chest. Squeeze your abs and then return to the starting position slowly. You can straighten your legs to make it harder or wear ankle weights.

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: Barbell
Mechanics Type: Isolation

Works your obliques. Stand straight up with your feet shoulder width apart. Place a light barbell on your shoulders. Keep your back straight and your head up. Bend to the right as far as possible then bend to the left as far as possible. Bend at your waist only, not at your hips or knees. You can also do this seated, or with dumbbells in your hands.

Main Muscle Worked: Abdominals
Other Muscles Worked: Lower Back,Shoulders
Equipment: Barbell
Mechanics Type: Compound

Tips: Start on your knees with your hands about shoulder width apart on a barbell that is positioned in front of you. Slowly roll the barbell forward as far as you can comfortably go. Keep the body locked in a straight position with no back “sag” when in the bottom position. Do not touch your chest or any part of your upper body to the ground. Slowly pull yourself back up using the same motion but in reverse. Repeat. This exercise can also be done with an ab wheel or on your toes.