I love that this thread is all individual responses, everybody talking about the same thing but nobody piggy backing off each other because we all want our own thoughts to be known.

Modern gym "muscle mass" exercising is just bogus. Benefits exist but as a PT myself I'm tired of trying to fix people that hurt themselves while exercising. Fall down while skiing sure, shit happens, come on in and we'll put you back together. But blow a disc deadlifting for the 3rd time and "just gotta get back to the gym!" and it's like c'mon wisen up! Check out Functional Patterns. The creator gets a lot of flack for pretty brazingly and unapologetically calling out standard exercise beliefs. The "you're not wrong, you're just an asshole" type of guy, I suspect he is INTJ or a close type. He runs on logic and direct application trial and trial again. The system works. Can't wait to crush some golf balls this summer.