'cardio' should be referred to as 'breaking a sweat'
some of you just dont workout hard, or as hard as you should. There is no matabolic stress caused by your workout, thus rendering your attempts to be 'swole' or even have abs useless. But you'll btch about the gased up bros hitting the weights hard, you take preworkout and do cable/machine everything except maybe on arms and chest you do some DBs.
so if you do, do cardio - make sure its worthwhile - break a sweat - because thats the only thing that will tell your body to burn fat
During cardio? Lower intensity burns more absolute fat, per minute, period. If you don't believe me, just get a vo2max test.
What about EPOC? Nebulous subject, but I've never seen anyone credible suggest you actually burn more calories total from a duration-equivalent HIIT session, which is the form of exercise most commonly discussed in the same breath as EPOC. Alan aragorn published a research review in which he claimed equivalent (not greater than) total calories burned from same-duration HIIT and steady-state sessions.
The thing is, no one can burn fuck all calories in 20 minutes, so the HIIT thing makes fuck all sense, IMO.
PS thong I'm eating about 4k calories right now, no fat difference compared to when I was trying to stay between 2500 and 3000. In fact the calipers read a few mm less. But haven't been on higher cals long enough to draw serious conclusions yet.