Here are some articles that i found, the most likely thing to increase cortisol too much is excessive cardio, such as more than 150 miles on your bike every week.  Also, low intensity workouts are good as well, such as yoga or tai chi.  I do the StrongFirst kind of kb workouts and avoiding excessive cortisol is a big thing with them.  Pavel said in his recent video on Huberman lab that excessive cortisol sucks and that the anti-glycolytic training that he has popularized is meant to avoid that.  He doesn't want you to be overly exhausted all the time from a workout.  So made up a bunch of EMOM stuff and has its practicioners to do that for 15 or 20 minutes.  I'm sure you get enough carbs since you do a lot endurance stuff, and carbohydrates help avoid cortisol.  Caffeine can increase it by a large amount as well.  I can't drink coffee any more, so had to ditch that.  I do other stuff, but coffee isn't good for me anymore so i've given that up.  

https://coactivehealth.uk/articles/training-advice/are-you-doing-too-much-cardio/

https://www.cnn.com/2023/06/23/health/cortisol-weight-wellness/index.html

I've been lazy with the workouts lately, and getting back into it, I fucked my arm and back doing weighted cardio about a week ago, and haven't been able to do even basic calisthenics without a lot of pain. Nothing I'll see a doctor about as it's already about 30-40% healed, but it's going slower than I figured it would. Hot/cold therapy works wonders, and weed makes the pain vanish (and each time I get high, it seems to fix it about 5-10%, but I'm not going to work out while high with an injury.

Thought I'd just warn, if it isn't common sense already, do not jump back in full steam, even after just a few weeks off - you'll regret it. And I've made this mistake multiple times before, usually injuring my chest, which takes a lot longer to heal (in my experience, 1-2 months).

I'm about 5 weeks in, and still need to ice my arm, my shoulder, and my back for at least 5-10 minutes a couple times a day after stretching. Which is down from the 8-12 heat & ice treatments I was doing about a month ago. It's about 75-85% healed now, I'd estimate. Also, weed tends to help me sleep, and it also helps with the healing process, as the nights I do use cannabis I find it heals enough for me to have a great morning, but I tend to start feeling pain by the end of the day (or night, it's like 4:30am where I am now, and I'm just taking a break from working on my current project segment, which I will probably finish sometime around noon).

Then a weekend of Xenoblade Chronicles X, and I'm going to start on mild calisthenics next week, I feel like I'll be there. But this week it's been mostly 30-45 minutes of stretching per day across 2-3 sessions. This is a fucking pain in the neck!

I'm about 5 weeks in, and still need to ice my arm, my shoulder, and my back for at least 5-10 minutes a couple times a day after stretching. Which is down from the 8-12 heat & ice treatments I was doing about a month ago. It's about 75-85% healed now, I'd estimate. Also, weed tends to help me sleep, and it also helps with the healing process, as the nights I do use cannabis I find it heals enough for me to have a great morning, but I tend to start feeling pain by the end of the day (or night, it's like 4:30am where I am now, and I'm just taking a break from working on my current project segment, which I will probably finish sometime around noon).

Then a weekend of Xenoblade Chronicles X, and I'm going to start on mild calisthenics next week, I feel like I'll be there. But this week it's been mostly 30-45 minutes of stretching per day across 2-3 sessions. This is a fucking pain in the neck!