Landmine rotations strengthen your core, hips, arms and shoulders without hurting your back. Here's how to do them.

I swapped out the usual sit-ups and Russian twists for a four-move dumbbell workout to really spice things up. I've been doing this routine for the past week, and I can confirm, it takes the burn ...

No, not sit-ups — this Pilates workout uses 5 exercises to build a stronger core and boost your balance No more crunches! Build a strong, stable core with these 5 standing ab exercises ...

While sit-ups and crunches might be seen as the cornerstone of ab and core workouts, they’re far from the only moves that get results. Plenty of other exercises take you off the mat and onto your feet ...

Sit-up haters, we've got a sit-up free workout ready and waiting for you to use—but if you love sit-ups, feel free to tack them onto the end of this five-move bodyweight routine.

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 ...