Both sit-ups and crunches can help target your core muscles, but there are key differences between the two ab workouts.

The runner's plank is an alternative I use as a certified trainer when sit-ups aren't possible, and this is exactly how to do the exercise.

For a long time, traditional sit-ups were considered the go-to bodyweight exercise for strengthening abdominal muscles.

This summer, you’ll need a reliable bank of abs exercises to strengthen your six-pack muscles and sculpt muscle definition across your torso. To get the ball rolling, add these exercises to your ...

Fit&Well fitness writer Harry Bullmore performing a half-kneeling kettlebell rotation. If your ab workouts consist of sit-up after sit-up after sit-up, it's time you changed your ways. Why? Not only ...

All the Latest Game Footage and Images from Sit-Ups Workout Are you ready for the 250 Sit-Ups Challenge? Body shaping is always good for our body. These workouts are perfect for men and women, ...

One Newton, Iowa, man liked doing sit-ups so much, he decided to break a world record. In 1985, Kenny Kirk, 24, did 31,111 sit-ups in just over 21 hours, beating the old record by more than 1,000. His ...