Just a few minutes of each of these variations of the standard ab crunch will work new muscles so you get tight abs, and a strong core. It will also improve your posture and overall efficiency while running.
This variation really engages your lower abs. If you're just starting out place your hands flat on the floor by your hips for added support.
The side crunch works your obliques, strengthening your core, crucial for good posture and preventing lower back pain.
The bicycle crunch stimulates more muscles than the traditional crunch, including your abs, obliques, and legs. Win, win, win.
Toe Touch Crunch
This set will get your heart rate going, helping you burn fat faster while you tone.
Vertical Leg Crunch
The vertical leg crunch is one of the most effective in toning abs and strengthening your core by working all key muscle groups.