What TD said. Also keep in mind that the benefit of HIIT is that you CONTINUE to burn calories at a higher rate for several hours after your workout. That's why HIIT is better than steady state cardio for burning calories and raising your metabolism.
I wouldn't worry too much about actual calories burned, but if you REALLY want to know at least what you're burning during the workout, I'd suggest getting a heart rate monitor for the most accurate count.
Last edited by PhotoChick : 12-27-2008 at 03:39 PM.