How to do cardio while lifting weights at the SAME time
If you're like me you would hate running on the treadmill too, an hour on the treadmill is torture it's so boring. But there is a way to work on your cardio while lifting weights.
The key to do it is all in your heart rate. It's pretty simple really, get it up quickly, and keep it up while you're working out. This means short rests, and no talking. If you're able to speak a complete sentence, you aren't workig hard enough (good test if you don't have HRM)
Doing heavy exercises gets my heart rate up easily, but to make sure I keep it up while letting my muscles rest I will do twists. Simply plant your feet shoulder width apart, elbows out to either side like you're going to do the chicken dance, and pretend you're holding a water bottle between your hands over your chest. Twist side to side for the entirety of your rest period, if you activate your abs while doing this you can get a little bit of an oblique workout in the process. I also superset where I can.
I try to keep my heart rate over 150, higher if I can, and If I went outside tomorrow I could run 4+ miles easily, even though I haven't even run 2 in the last month.