All About Crunches

Crunches are a great way to work your abdominal muscles. To perform a crunch, you lie down on your back with your knees in the air. Place your hands across your chest or behind your head and curl forward, stopping just before your lower back leaves the ground. Gently lower yourself down and repeat.

This exercise is an excellent alternative to sit-ups, which can hurt the back with repetitive strain. By doing crunches instead of sit-ups, you are also doing a better job at isolating the abdominal muscles in the workout, as sit-ups tend to involve the hips or the legs in the exercise.
If you want to involve more of your body in the workout, you can perform crunches on an exercise ball. Using an exercise ball keeps your whole body more active, and more muscles will be used to maintain your balance. Over time, as these muscles strengthen, you may notice your balance start to improve in real life situations. A lot of these muscles are located in your abdomen, but are not specifically trained by doing crunches alone, so adding an exercise ball to your routine is a great way to build up the rest of your abdomen as well.

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