So what do I *actually* burn at my fitness class?

So I go to this kinda circuits class for an hour twice a week. You have a 5-10 min stretch and mobility drills and a 5 min jog/stretch cooldown. In between, you have intervals of intense effort with various movements with dumbbells/barbells (squats, presses, deadlifts), calisthenics, bodyweight exercises, box jumps, all sorts. Recoveries are short, You may have an extra minute or two as a new circuit is explained to you. Every week is different.

So CC says circuit training is about 556 cals/hour. I count my classes as about 40 min of circuits and 20 min of stretching. Does this sound about right to you? Am I overestimating my burn?

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