1,028 calories down at Zumba!

 If your HRM doesn't ask whether you are male or female it can be off by as much as 20%!  Men burn a hell of a lot more calories than we do at the same heart rate.   Really not trying to rain on your parade because that's awesome you went to Zumba (it's a blast to look like an idiot!) but the chances you actually burned that many are pretty slim in just an hour.

No rain here. My HRM takes into acount gender, weight, resting heart rate, age. It is pretty accurate I think...maybe a skirts high, bit close. The zumba calculators online say a woman my size at a high intensity can burn 900+ in an hour...so it isn't too far off ..my intensity level was just high today...I will probably pay for it tomorrow though.