Crunches have had their moment, but it's time to take your core training to the next level. Your abs aren't just show muscles ...

The crunch is a classic ab exercise. It’s also pretty straightforward: Lie on your back with your knees bent and feet flat on the floor, contract your abdominals, and lift your shoulders, neck, and ...

Although crunches seem easy, research suggests that ... Repeat 10 times and then switch legs. Start by lying flat on your back with your legs in tabletop position and your hands behind your ...

A side oblique crunch can be done lying down. This exercise works the ab and oblique muscles. A toe tap crunch adds an extra level to the traditional crunch by targeting the upper and lower abs.

As your core is working against gravity to keep your body stable as you move, you’ll be working just as hard, if not harder, than you would lying on your back doing sit-ups and crunches.

Unfortunately, the basic crunches and sit-ups we've been taught are not actually the most efficient or healthiest ways to build a strong core. Worse, they may cause serious damage to your back and ...