Question: how many calories do you burn doing 40 jumping jacks?
Answer: The “Real” 100 Calorie Workout The original workout claimed that 40 jumping jacks, 30 crunches, 20 squats, and 10 push-ups could burn 100 calories. However, in reality, it burns less than 20. So, Jeanie multiplied the workout by 5 and burned 121 calories.