Pretty difficult to measure any sort of calorific output really. That's partly why people tend to be so bad at working out how much they can eat. Efficiencies vary wildly, and obviously what you can do at X heart rate might be very different to what I can do at X heart rate.
Thankfully if you monitor for long enough you get a general idea of how your body works. I always laugh when I see the figures given out by gym machines. It's no wonder so many people who work out regularly are so fat.
Thankfully if you monitor for long enough you get a general idea of how your body works. I always laugh when I see the figures given out by gym machines. It's no wonder so many people who work out regularly are so fat.