if they're really sisters....there should be a photo with the two of them side by side. Also, I don't beleive the top girl "only' does cardio.....if not weights, she does some resistance excercise.
if they're really sisters....there should be a photo with the two of them side by side. Also, I don't beleive the top girl "only' does cardio.....if not weights, she does some resistance excercise.