Beware calorie tallies

Most cardio machines at the gym likely offer the option of measuring your workout in calories burned rather than distance covered or time elapsed. But beware—those estimations are notoriously inaccurate, given that no two bodies will burn the same number of calories during the same workout. Further, multiple studies have suggested that more calories are burned in the hours after vigorous exercise, not during. So, if calorie-counting is your thing, be wary of what the screen on your elliptical or treadmill tells you. Instead of taking it at face value, use the estimated number of calories burned the last time you got on the machine as a benchmark, and then beat it.

Source: nytimes.com