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"Most people think 10,000 steps is just a random fitness goal, but if you actually commit to it, you are triggering a biological overhaul that affects everything from your toe nails to your DNA. But first, a reality check: the 10,000-step rule wasn’t designed by doctors; it was a marketing tactic from a 1960s Japanese clock company. However, science has since caught up, and what they discovered is even more fascinating than the marketing. The moment you step out the door, your body flips a metab