What is "Cardio"? Depending on who are you talking to, you will undoubtedly get a myriad of responses to this question. "45 minutes on the Treadmill." "Early morning walk around the neighborhood." "50 burpees!" "Sprint til you puke!! Ahhhh" Woah woah woah.. little too intense there.. yeah right there.. at the end of the list. whoops. So which one is correct? Which one should I be doing? Which one is right for my goals? The short answer is that they are all correct in the sens