liquidmuscle said:
i know you didnt want to get in this discussion but usually we see eye to eye can you tell me why you think this?
Ok...quickly. When are you at your most catabolic? Right when you wake up, after an ~8 hour fast. So why add to this catabolism by doing cardio? Sure, you'll burn lots of fat, but you'll break down proteins as well.
It doesn't matter when you do the cardio, if you do it in the AM, lots of cortisol will be released, thus lots of muscle and fat will be lost. As soon as you eat, our old friend insulin comes into play re-storing all of the fat and muscle we lost...and if we're in a negative energy balance, the muscle will not be rebuilt.
It all comes down to energy balance, no matter what, you'll burn calories when you do cardio, and the food you eat will go to rebuilding tissues that were catabolized.
If you eat before cardio, you'll burn the cals that you ingested (as well as some stored energy)...thus this energy will not go to building tissues (fats nor protein)...thus you will not get fat.
One thing cardio does do is make you more efficient at burning fat. IMO, if you're happy with the lean mass you have...I advise you to stay in an even calorie balance and do lots of cardio. Your body will start burning more fat than carbs, and you'll start shedding the fat and preserving everything else.
I don't know if you know anything about the "cross-over point," but basically it's the intensity at which you start burning more carbs than fat. In untrained people I believe it's around 60%, with training it moves up...so that at any intensity, you're burning more fat than carbs. So that TRAINING adaptation is what will cause you to shed fat...but it's a long term adaptation (hence the emphasis on TRAINING, not exercise, which is only a single bout).
It's hard to put into words...but I tried...if you have any questions...just ask, and I'll try to verbalize it a little better.