Crunches can be a real pain in the neck. Although this popular exercise helps strengthen the rectus abdominis at the front of the waist, if you're a beginner or if your form is poor, it can do more harm than good and strain your neck. Gradually building abdominal strength and mastering proper form is essential to getting the most out of crunches. About Ab Crunches While crunches don't reduce belly fat, they strengthen your abs, and as part of your core, strong abs can relieve lower back pain and improve athletic performance, balance and stability. (See References 1) Traditional crunches are performed by lying face up on the floor with knees bent and feet flat, or with knees directly above hips and lower legs parallel to the floor. Then place your hands behind your head for support and lift your head and shoulder blades off the floor to bring your rib cage toward your pelvis. (See Reference 2) Mistakes Made During Crunches There are many mistakes made during crunches that can take a toll ...