If you are a student of fitness long enough, eventually you will be exposed to some variation of the plank for core stability. The plank can be taught two ways: on your forearms or with straight arms. Regardless of the way it’s taught, the basic principle is the same. Set yourself up so your body is straight and strong, like a plank, and hold it (or lift a limb from the floor, or bring a knee into your chest, or rock back and forth). The variations are endless.
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