Whoops...just noticed this so I'll be outta here for the most part. Thing is it doesn't matter what level you're at. Cardio is cardio...it has a specific definition. Cardio in itself is an exercise done for an extended period of time...plain and simple...not much too it. Heart rate is relative to everyone and 60% of my heart rate is much different in terms of performance than someone elses 60% but that 60% is the key no matter who you are. These zones are what determines what your body is burning and whats doing all the work...your heart or your muscles.
And I just noticed this.
I don't know what you're still trying to get at. Since I'm not able to go as long as you can I'm not doing cardio??? Google aerobics if you don't know what it refers to.
Definition of Aerobics:
Using the same large muscle group, rhythmically, for a period of 15 to 20 minutes or longer while maintaining 60-80% of your maximum heart rate.
Many types of exercise are aerobic, and by definition are performed at moderate levels of intensity for extended periods of time. Aerobic exercise involves a warming up period at 50-60% of maximum heart rate, followed by at least 20 minutes of exercise at an intensity of 70-80% of maximum heart rate and a cooling down period at an intensity of 50-60% of maximum heart rate.
The American College of Sports Medicine (ACSM) defines aerobic exercise as "any activity that uses large muscle groups, can be maintained continuously, and is rhythmic in nature." It is a type of exercise that overloads the heart and lungs and causes them to work harder than at rest.
Aerobic exercise is any extended activity that makes you breathe hard while using the large muscle groups at a regular, even pace.
You insistance that I don't know what I'm doing is rude and irritating.