The Estrogen Handbook
Heh. I'm actually getting my cortisol levels tested soon because I have a lot of fatigue (and some other symptoms), even before I started HGH. Hopefully the doc also sees my tanked T4 from HGH and Rx's me some since it's cheaper than buying it from the black market.
"Running, or any aerobic training in moderation, has a positive effect on health. There is a point of diminishing returns, where chronic stress from overtraining, which is common in runners, may be linked to problems in the adrenal gland. Overtraining Syndrome (OS) has been linked with adrenal insufficiency. There is a direct link between stress and the adrenal glands, and the physical stress of overtraining may cause the hormones produced in these glands to become depleted. Overtraining Syndrome (OS) has been described as chronic fatigue, burnout and staleness, where an imbalance between training/competition, versus recovery occurs. Training alone is seldom the primary cause. In most cases, the total amount of stress on the athlete exceeds their capacity to cope. A triggering stressful event, along with the chronic overtraining, pushes the athlete to start developing symptoms of overtraining syndrome, which is far worse than classic overtraining. Overtraining can be a part of healthy training, if only done for a short period of time. Chronic overtraining is what leads to serious health problems, including adrenal insufficiency."
Edit: It doesn't specifically state anaerobic training anywhere in there but I would think lifting excessively may have the potential to cause OS.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3648788/.