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Editorial: Revamp Navy fitness test
It's well past time, for example, to deep-six the sit-up, an outdated exercise today viewed as a key cause of lower back injuries. Experts say there are better measures of core strength that have the added advantage of being less prone to cheating. The plank, for example, more accurately measures core strength and because it's done by holding the body arrow straight while resting only on the toes and forearms it does not subject muscles to strain by motion.