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@TheBrick(Tommy)
yeah, definitely.
remember you burn max quantity of fat at 60% of your maximum heart rate. At 80% you're exercisingly aerobically and the fat burn drops significantly.[/quote]
What are you talking about?
"fat burning zones" are bullpat. Your body may have a preference for fat as fuel at 60% HRmax but you will require more calories in total if you spend the same time at 80% HRmax. Also, I think you meant anaerobically (ie. without oxygen) and there's no switchover point for this to happen - your body will still be using fat as fuel at all but the highest intensity of exercise. As your HR increases, the percentage of fat supplying the energy decreases and the percentage of muscle glycogen (carbs) used increases. Once you slow down you will again move to using more fat as fuel but you still need carbs present to use it.
An 80% max exercise will burn use more energy fat/carbohydrates in TOTAL than a 60% one. It will depend on the person whether they can maintain the higher intensity. Ah, there's too much and I have coffee to drink.. read an exercise physiology book. :P[/quote]
pwned.