When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While ...

When was the last time you cranked out a set of sit-ups? Chances are, it was during elementary school P.E., probably while dreading the infamous Presidential Fitness Test. But don't let those memories ...

Core strength testing has come a long way from the straight-legged, twisting sit-ups used before World War II. We've moved on to bent-knee sit-ups, to crunches and now to the plank pose or hanging ...

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.