I don't think the fact that HIIT causes greater overall fat loss is some new scientific breakthrough. The time spent performing HIIT + EPOC simply burns more calories than most low or medium intensity cardio sessions, and obviously more calories burned is going to yield greater fat loss. It's the same reason that 2 smaller cardio sessions per day are better than one long session of same total duration, you're getting 2 EPOC's instead of one and burning more total calories.
HIIT has gotten a bad rep in the BB community because everyone thinks that when your HR exceeds 75% of max the magical catabolic demon shows up and eats away all your muscle mass, which is simply not true. I've done HIIT consistently EOD while cutting off-cycle with heart rate getting up close to 180 and had no significant drop in LBM or strength. It does make me want to puke my brains out but doesn't burn muscle mass.![]()




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