Tis the season for cardio machines to be full – inspired by new year's resolutions or guilt from holiday splurges. With no time to dissect the motivational or emotional aspects of these efforts, I turn attention to the virtue of honesty. Are cardio machines lying to you when estimating energy expenditure (calories) from a workout? I will focus on treadmills and ellipticals. Prediction Equations: How They Work All cardio machines depend on equations to 'predict' how...
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6504 Hits