Some of the best coaches out there are considering these things and drawing weekly bloods to monitor things we don't consider at all. Im a biomedical engineer by trade and I've definitely been known to overcomplicate things in the eyes of some people.
However, every single one of us are making mistakes in our diet, training, and cycle design that we will never know about and live in ignorant bliss. But... there is an exact combination of every single input that will maximize the output.
We know that a properly timed refeed can get the fat loss moving again, a training deload can improve gains, a cruise can make the blast more effective, and so on. This is related to so many enzymes, proteins, hormones, and receptors that unregulate/downregulate based on negative feedback loops to maintain homeostasis.
I just spent an ASSLOAD of $ on Primo, serostim, and IGF. I want to be certain I'm getting the most out of them is all lol! If there is a forum you know of with a more scientific approach to bodybuilding let me know, i know this is not a common topic and may not be the best place to get the feedback I'm looking for. I'm the type to read all of vigorous Steve's cited articles BTW. It is what it is, we are all different man