so it's best to do your crunches as part of a larger, well-rounded core routine that works all of your abdominal muscles. Along with the abs, the core is made up of many other muscles in the trunk ...

We're now going to demonstrate an exercise that is very often done improperly and that is the abdominal crunch or sit up. We're going to first demonstrate the way this exercise is usually done wrong.

“When holding a plank, the work is constant,” says Emma. “In a crunch, you give the abdominal muscles a slight respite as you reach the floor, but in the plank you are just holding continuously.

Here's what the exercise is, which muscles it works and why crunches are so good for overall health. Crunches are a popular abdominal exercise that is similar to a sit-up but with a shorter range of ...

Crunches are a popular abdominal exercise that is similar to a sit-up but with a shorter range of motion. They are considered a form of resistance training because the movement causes your ...