We asked exercise physiologist Will Drexler to tackle your most common
questions about fitness.
Q: How accurate are the calorie-burning counters on cardio
A: Not very. They tend to overestimate calorie burn by a fair amount —
up to 30 percent, depending on the machine. Stationary bikes, treadmills, and
machines that allow you to enter your weight tend to be more accurate;
ellipticals generally exaggerate results. To determine how many calories you