In my opinion and little experience, i do fell lot of stress everywhere, mucles and CNS in any workout, the rule is achieve the maximum each workout, going to the failure with light weights of heavy weights means effort and you will get stressed, high volume, HIT, Heavy Duty, DC, Victor's training, Milos training or any other variation if you are taking it serious, you will burn - kill yourself, even with good genetics of poor genetics..... If you need recovery just take 2,3 4 or 5 days off and then kill yourslef again.
If you are fallowing Havy Duty or HIT training, just fallow the principles and their ways to periodization and you will get the results.
Even when you are doing Heavy Dutyr and you are decreasing the intensity how Mike Mentzer explains, you kill yourself, and after 6 weeks of high intensity you take 10 days off.
It is just Different ways to grow, just fallow their rules and you will grow.