How to do it: Get on all fours with your hands under your shoulders—holding light dumbbells—and your knees under your hips.

This eight-move abs workout from Pilates instructor Lilly Sabri targets the deep core muscles as well as the abs and obliques, all in just eight minutes. You don’t even need any equipment to do the ...

Skip sit-ups and try this 8-move dumbbell workout to build a stronger core and hips. While sit-ups remain popular at gyms, on ...

Lie down on the ground, and drive your lower back into the floor. Hold a light weight plate or dumbbell in both hands. Lift your legs off the floor just a few inches. At the same time, extend your ...