You don't need sit-ups to build a strong core, ... But actually, your core drives every one of these exercises, especially from a seated or kneeling position. Each exercise teaches balance, ...

Assisted sit-up Sets : 3 Reps : 5-8 Anchor your feet under something sturdy, like a couch or heavy free weights, then lie on ...

The zombie sit-up isn’t for the faint of heart; to find out more, I added it to my workouts for a week and felt the difference in my abs.

In a seated position at the edge or side of your seat, sit up straight with your legs planted firmly in front of you in a 90-degree angle. Then, walk back one of your legs until it’s stretched ...