Do I trust my "machines" burned calories?

aboz13

I have an elliptical and I also have a treadmill. I sweat much more when I run on my treadmill than I do on my elliptical. It is true for running outside also. But the elliptical tells me I burn almost twice as many calories!???? Should I believe what the machine is telling me my "burn" is?

StarkLark

I'm sure some machines are more accurate than others but I wouldn't really count on the accuracy of anything other than a heart rate monitor.