We’re data junkies, so we’re always studying the numbers after runs, dissecting our training logs like an astrologist decoding a birth chart. Yet time and again, we’ve learned most factors related to ...

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SAVE $300: The ProForm Cadence Compact 500 Folding Treadmill is on sale for $397 at Walmart as of Feb. 17. You'll save 43% and get a 30-day iFIT personal training membership to boot. Building a home ...