Independent observers (like LIVESTRONG.com) have verified that a Barry’s workout can burn 1,000 calories in an hour. Your mileage may vary, but we’ve seen clients burn from 700 to 1,300 calories, depending on their body weight and effort level. Everyone is different and results may vary, but at Barry’s it’s not just about what you burn in class, but also how our methodology promotes calorie burn after class.