firs round of ?'s answered

How do you maximize and get the most benefit out of a cardio workout? ie. length of time, heart rate, etc? For me, cardio is the hardest thing to do because I get bored fairly easy. So, I have to make sure my cardio has variety. This ensures that I stay focused and it is also extremely beneficial for your body. If you do the same cardio workout over and over again, with little change, your ...