First, you put on a heart rate monitor. Then, you go to either a rowing machine, treadmill or weight floor. Each 60-minute class will contain a circuit of all three of these elements and your heart rate and calories burned will be displayed on a large screen along with the other class members’ data.
The data is presented as a bar graph with x-axis representing the heart rate zone (warmup to fat burning) and the y-axis representing time spent within that heart rate zone. The goal is 12-20 minutes in zones 4 (orange zone) and 5 (red zone) in order to facilitate the excess post-exercise oxygen consumption (EPOC) effect and burn maximum fat post-workout. Although this class displays everyone’s data, you’re really competing against yourself, trying to spend more and more time in the orange heart rate zone.
I burned 774 calories in one class and I only spent four minutes in the orange. I likely would’ve burned 1,000 calories if I had pushed myself into the orange zone for a few more minutes.
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