Someone needs a fact checker. This math is so wrong. 1000 jumping jacks is only 500 calories burnt. That's only the calories of one pound of fat, 3500 calories. To burn 1 pound do 7000 jumping jacks. That sounds a bit more reasonable, eh?
Killer Kardio: Here’s an intense cardio workout you can do at home! When you reach the end, see how many burpees you can do. (And if you’d like, keep track of how many you can do each time. Watch as the number goes up.