Not true. HIIT has proven to be vastly superior in shifting bodyfat to steady state cardio. The old idea of 60-75% MHR for fat burning is simply no longer a valid or defendable theory
I have to agree with you.
I've been doing HIIT for a short while now, (about 3 months) actually for the first time in my life, and the fat is literally dropping off faster than I could have ever thought possible. I went from 230lbs. at the 1st of the year down to 192lbs. as of this morning.
I'm at the point now where people are noticing the weight loss, and asking me what I've been doing to lose it.
One thing that I've been doing lately is incorporating a sort of HIIT in with my forms practice. I'll do a form, then 20 pushups, then another form, then 20 crunches, form, pushups, ect...
Also, I'll do a giant set of 30 jumping jacks, 30 pushups, 30sec of running in place with knees high, and 30 crunches, then repeat it twice more for 3 giant sets with 20 seconds rest between each set.
I'm sweating bullets after that.