03/28/2008 02:45 am ET | Updated Nov 17, 2011

Your Exercise Equipment Is Lying To You

Exercise physiologists say there is little in the world of exercise as wildly exaggerated as people's estimates of the number of calories they burn.

Despite the displays on machines at gyms, with their precise-looking calorie counts, and despite the official-looking published charts of exercise and calories, it can be all but impossible to accurately estimate of the number of calories you burn.

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