To get chiseled abs, you have to target your abdominal muscles at the front and fire up your obliques on the sides of your core. Oblique crunches are a simple yet effective exercise to add to your ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." If you've completed a core workout—or 100 of them—over the years, you likely know what crunches are ...