I think since people are reading way too much into one lines or specific sentences or paragraphs on the article I linked instead of the context of the whole thing (and what the finding actually was), that they should probably read the study that the article actually linked to.
The basics are that it's not particularly super beneficial to create metabolic stress so much as it is to get more total volume in.
Probably one of the big reasons for a rushed or minimized window between sets comes into play as a result of people having things to do. There's also a kind of social judging component when people go to the gym and it looks like all you're doing is playing on your phone instead of working out. So rush rush go go.
The truth is, ensuring that the ATP-PC system can recharge between sets, which provides for more total volume on the next set, is a pretty big key to strength training. That time window is 3+ mins. And like all things about any one particular person's body who I would be talking to or advising to on the internet... I don't know you! I don't know your body! So when I'm saying try a wait of 5mins or even 6mins to a person who is claiming years of attempts to get gains on biceps, my advice is contructed in such a way to remove any doubt that his ATP-PC system is recharged and that he can make the best attempt at the most volume.
Those of you trying to criticize or call it out as bad advice might want to link to something to support your ideas.
https://www.ncbi.nlm.nih.gov/pubmed/26605807
Twenty-one young resistance-trained
men were
randomly assigned to either a
group that performed a resistance training (RT) program
with 1-minute rest intervals (SHORT)
or a group that employed
3-minute rest intervals (LONG). All other RT variables were held constant. The study period lasted
8 weeks with subjects performing
3 total body workouts a week comprised 3 sets of 8-12 repetition maximum (RM) of 7 different exercises per session...
...This study provides evidence that longer rest periods promote greater increases in muscle strength and hypertrophy in young resistance-trained men.