Doing the classic sit-up involves having a partner hold your feet or anchoring your feet under a brace as you lift your torso toward your thighs. This variation may be common, but it isn't necessarily ...

Sit-ups often come to mind when you think about working your abs or strengthening your core. It’s one of the most old-school, well-known exercises for ab-shredding, but recently, it’s become less and ...