Training wise- I cant compare to you, and majority of other readers here cant either, you are different league altogether. You set a goal for yourself, and you are determined to get there- no matter what and you are aware of possible consequences and ready to accept them if they happened. I actually respect that- but majority of others if they try to follow your route will have their fingers burned.
As for cortisol- I said that if cortisol after exercise is too low which is bit different than low- if its low than they should report to ER immidiately. If its not where it should be (burned adrenals) than they will not feel to well, majority will feel kind-of depressed. And also body will pump in adrenaline which is also not good- it will cause sleep issues, raised blood pressure etc... and will prevent or at least make hormonal recovery very difficult.
Lot of research comparing weightlifters training an hour or so or less had increase in test. levels, on other hand endurance athletes have opposite effect. I will feel free to say that endurance trainings are quite unhealthy.
As from my own research- I compared long training 90 mins 3X a week, agains 4 trainings a week with 60-65 min trainings 4X a week.
In long training sessions tt would be around 100 ng/dl lower- but considering that my body can make only 30-35 ng/dl of surpluss it means that I need 3 extra weeks of "good conditions" (complete rest or light training, enough sleep) to recover to normal levels.
Obvioulsy, all that is different if someone is on cycle... But again, here I'm representing "average Joe" or random guys- and when these guys get overexcited, usualy it does not end up good.
BTW- you may find this study interesting:
Hormonal responses to consecutive days of heavy-resistance exercise with or without nutritional supplementation