No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles. "Because the movement is smaller, you can control momentum more," ...

Welcome to Start TODAY. Sign up for our Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! Our core muscles are essential to everyday movement; we ...

The main difference between sit-ups ... a crunch Lie on your back with your knees bent and feet flat on the floor. Clasp your hands behind your head. Be sure to clasp loosely, so you don't pull ...

The same can be said of long-standing resistance training exercises and bodyweight movements like pull-ups ... you slowly bicycle kick to perform an exercise known as bicycle crunches.