Where's the choices?? But anyways cardio has to do directly with the heart and it's pace if I do crunches that is NOT cardio respiratory it's neither cardio respiratory hope this helps
Answer:
I believe that it is the Immediate family
If you like to run, it is probably the best, in my opinion. If you are
already running, keep it up. Run in moderation (forget the
marathons….think long term, not long distance).
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