I always found the cortisol argument interesting, but never compelling enough to change my training. It's typical for me to train 90 minutes to two hours on 2 or 3 bodyparts, not including any cardio.
Anyone ever pay attention to how the top BBers from the 70s trained? Arnold would spend 3 or 4 hours a day in the gym. He never struck me as someone who suffered from cortisol overload. Granted, he was anabolically assisted. But these days, so are we with our intra workout proteins, creatine, and other helpful compounds. And that's when we aren't on a PH or AAS cycle.
All advice given is for entertainment value only. And it's free. Take it for what it's worth.
Well... How much time do you spend and what do you look like?
I lift heavy usually for only about half the time i spend in the gym. The rest is some low joint stress higher rep and usually slower tempo, trying to cultivate a massive pump. I also notice my cardio is working a lot harder in the second half of a session, like I'm almost lazy for the first 15-30 min but the end of a workout for me is always super intense even though its during those first 15-30 I would set PRs
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^^^this! Every time I go long I think of pumping iron and how he repeats many times how many hours he spent in the gym.