Quote:
Originally Posted by beach_plums
If I remember correctly, stage 6 is optional and meant for some serious strength building; stage 7 is the cutting stage. I'm guessing that HIIT is left off these because they're going to be pretty taxing on their own. I could be wrong though--I don't have the book in front of me.
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I'm guessing it all has to do with your goals. HIIT isn't just good for fat loss, it helps your body move the lactic acid out of your muscles faster so you can work out harder, and it increases your aerobic fitness. So HIIT once a week can help you with all your weight training goals.
If you do it more often, you'll probably lose more fat. If you stay at one a week, you'll probably put more emphasis on muscle building.
I know in Afterburn, Alwyn has people doing HIIT up to 5 x a week for 28 minutes each time.