I’ve come down about 20 lbs in the last several months, making use of no cardio, simply utilizing proper dietary manipulation, and keeping up with my heavy training. Still, I don’t know how feasible it is to achieve 4% bodyfat without doing any. As I’ll be switching my training protocol in the next month to a more antagonistic/lactate approach for a more severe depletion, I’m thinking of throwing in 2 HIIT sessions on my ‘off’ days.
I think a lot of folks forget that any exercise is muscle wasting to a point once you get beyond your recovery threthshold. Not to sound like a HIT jedi, but Mentzer once said that you want to do the absolute minimum to stimulate growth so that your body has full recovery ability to adapt.
THe discussion of heart health, well, it’s been shown over and again that weight training is great for your heart, just like any other muscle. Sure the occassional jog won’t kill you, but if you’re after maintaining maximum muscle mass and minimum body fat,… well, lots of cardio is not the best approach, I think most folks on here will agree with that.