What is cardio ? Baby dont hurt me ?
A regular person who walks around has a normally conditionned muscle.
This means that the muscle is big enough to carry out the basic task of walking without causing notable increased heartrate. It doest cause microtrauma, it doesnt trigger the body to burn fat or sugar to fuel this movement.
Offcourse, if that person does 20km walks, this changes as the acid build up in the muscle will promote a very slight increased response to build muscle. But just for walking, nothing very special.
Now, for this normal person, cardio means the following :
You are doing an activity with your legs whilst maintaining your heartrate at 80%max. Because your muscles are normally conditionned, this doesnt cause microtrauma, because the heartrate is controlled, you will moderately burn sugar, and after a while start burning fat because of the slow need of fuelling.
Now in these conditions, the body acts mainly catabolic. You will burn fat to sustain the contraction. A key element to cardio is the resistance. Cardio means you want to start using fat for fuel. But if the resistance is to high, the watt your muscles must produce is to high, and the body will gladly continue to burn only sugar.
Because there is nearly no resistance, there is no microtrauma. Yes, the lactic acid buildup triggers IG response, but its not worth mentionning.
So our regular person, burns fat, and cannot build muscle.
Now, what this idiot douchebag strawman swagcuntdeluxe does, is taking results from studies on people who are NOT normally contidionned. If you arent normally conditionned, first off all the muscle is to small. Meaning youll get microtrauma, and the workload is very high, meaning no fatburning but sugarburning instead. And massive lactic acid buildup, combined with microtrauma, causing a small increase in size.
A second thing is, that if you start sporting regularly, you'll retain more water in the muscle, wich can lead to minor size increase even for regular men.
He then starts with a blatant lie and a fact. If you want to grow muscle, you need to increase intensity, but go anaerobic to get hypertrophy.
In my current volume blocks, i work with short pauzes between sets so the muscle cant keep recovering in time, becomes anaerobic, turns hypertrophic, whilst burning a crapton of calories.