PIVOT!

Well then, you best check their underwear first.

Not as easy as posted here. There are lots of variables for sure. Everyone claims that genetics plays a huge role but exactly what are we talking about? In the absence of knowledge many attribute growth to something we know very little about. Genetics. This is just an excuse not a clear explanation.

Mike Mentzer was right when he stated there is one true explanation for phenomena. Applies to hypertrophy as well. There has never been any complete agreement about what to do in the gym and what to eat, etc. The science has progressed over the decades but has not that much to help advanced bodybuilders. This leads to the profession of gurus and expert trainers who try to embrace everything known from experience to help the aspiring champions.

The exercise scientists don't study champion bodybuilders. Period. So what do they really know about building maximum muscular size? Clearly the science is contaminated by all the drugs used by many bodybuilders. Most trainees wouldn't know exactly what caused the hypertrophy. We have seen endless discussions online about how to get big. These discussions will continue for a long, long time. I have stated before that one needs to be an expert to recognize when others are also expert or not. Doing what works for you is not a scientific theory of hypertrophy.

Pick weights up & put them down - Eat well - Rest - & hopefully growth will occur.
As in all physical sporting endeavours Genetics plays a huge role.

Forget the in & out of scientific muscle growth theory.
I very much doubt Arnold / Robbie / Sergio/ Samir / Haney / Dorian / Ronnie etc etc
Ever bothered with such stuff & it certainly didn't hinder them.  😊👊🏻👍🏻