(3) Protein - this is a very important nutrient (macro) as the body doesn’t really store protein. It recycles protein as we are mainly protein, so it makes sense for protein metabolism/catabolism to be equally constant…which means we should make sure to be consuming protein via food or supplements (food over supplements) to keep up with this process. If we aren’t consuming protein, then the body will be forced to mostly use it own protein (muscle) for energy. Sure, amino acids help via BCAA vs EAA, but whole protein (complete) combines every amino acid. Certain foods are complete, while some are lightly complete. So strive to eat foods that collectively create whole protein (complete). I also suggest no less then 100g of protein just to play things safe and then manipulate (adjust amount) upon determination.
I HATE that the resistance training community can be so tribal. I have been preaching to bodybuilders for years about the benefits of powerlifting, or Olympic lifting or kettlebells or even Crossfit style conditioning and many have been receptive. Learn from each other and achieve levels of fitness you simply could not have otherwise. Don’t brush off bodybuilding wisdom…it could be the missing factor in your program.