Looks to me like this whole thread was carried by about six people, all of whom are younger, healthier and looking for ways to get fitter and not necessarily aiming to battle obesity and metabolic syndrome.
I’m a 68-year-old, w/m who had a heart attack 15 years ago that left me with bradycardia and a reating heart rate in the upper 40s. I am on beta blockers and antiarrythmia meds that leave me with the metabolism of a snail. I also had a total knee replacement six years ago.
All this was thanks to severe exposure to Agent Orange in Vietnam and rolling down steep hills.
That said, HIIT workouts are very difficult but I do manage to briskly walk my dog two miles each outing on four days a week (heat/humidity in Louisiana permitting). My legs have remained strong despite knee limitations (no jogging at all).
Have been eating LCHF since April and have lost 30 pounds. IF and EF gave seems to do the trick.
At my age and condition HIIT is not a realistic option but y’all are depressing as hell with all the arguing. Y’all have me thinking I’m just better off staying fat and enjoying what years I have remaining.
BUT … you know what. Fitness begins in the mind and heart (what I have left). Get that straight and the rest of the body will follow.
Diets come and diets go, exercise gurus drop dead while jogging, bodybuilders croak from steroid abuse. And there comes a time when HIIT is no longer an option.
People, take it from an old Marine, you can adapt and overcome. You just gotta want it. How you get there is your choice.