Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.

We’ve all done it. Stared down at our stomach, groaned, and dropped to the floor to bang out a set of sit-ups—hoping, maybe praying, that each crunch would somehow melt away belly fat. It’s ...

The main difference between sit-ups and crunches is the range of motion involved in each exercise. Sit-ups require you to lift all the way up, while crunches require a slight lift off the ground.