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?
Home Jump Rope Circuit Workout from: Fitness is Sexy. This was really fun. I liked the jump rope parts a lot and it was insanely hard. Where I am now in fitness, I had to take at least 3 one min breaks.