Exercise Ball Crunch

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: Exercise Ball
Mechanics Type: Isolation 
 
Tips: Sit on top of an exercise ball with your feet placed firmly on the floor. Roll the bottom half of your glutes off the ball by sliding forward. Your lower back should be centered on top of the ball. Place your hands on the [...]

Exercise Ball Pull-In

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: Exercise Ball
Mechanics Type: Compound 
Tips: Works more of the lower abs. Start in a push-up position and place your lower shins on top of the exercise ball. While keeping your back completely straight, pull your knees in towards your chest, allowing the ball to roll forward under your ankles. [...]

Flat Bench Leg Pull-In

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Compound 
 
Tips: Works your lower abs. Lie on a flat bench with your legs off the end. Place your hands under your butt with your palms down. Put your legs straight out. Bend your knees, pulling your upper thighs into your midsection. Return to the starting position. [...]

Flat Bench Lying Leg Raise

Main Muscle Worked: Abdominals
Other Muscles Worked: None
Equipment: BodyOnly
Mechanics Type: Isolation 
 
Tips: Works your lower abs. Place a light weight between your feet if you can. Lie flat on a bench with your legs off the end. Place your hands under your butt with your palms down. Keep your legs as straight as possible and your knees [...]