I agree with everything you said, and I do not do it for any of those reasons. However you did get me thinking.
I do HIIT 4 times a week, first thing in the morning on empty stomach. I believe it helps with my metabolic rate, and that's the main reason I keep them short, just to trigger my system and get out. Always under 20 minutes but intense to the point of vomitting.
In your opinion is this also a waste of time? (because honestly, it can be so overly brutal that I would NOT want to continue if it serves no solid purpose).
I have lost 30 pounds since I started this way of cardio-ing back in October, but then again, it could also be the fact that I lowered my cals...
I know you have WAY more experience and knowledge in leaning out than I do. So I'm open to burly's personal advise here ! Spare me the mistakes bro