Some of these products and exercises do strengthen your core in physical therapy Voorhees NJ; however, they are doing much more harm than they are worth. Besides being dangerous to your body, they are also inefficient. I will use a sit-up for an example. During this exercise there is only a small window of movement where you are actually using your core safely. This window is only a few inches. The rest of the arc of a sit-up is spinal compression and momentum.
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