Jiffer, i am also battling adrenal issue due to overtraining except my cortisol pitches up at any perceived stress. My hormones are normal but are behaving as if I have a deficiency.

I was misdiagnosed put on a bunch of hormones that made my symptoms work.

I am now working with a nutritionist as well. He has me riding 6 days on trainer for one hour and one long ride (60 miles) on Saturdays. I have to stay under 130 max heart rate (zone 1 - ability to carry conversation). He went riding with me once (he is a cyclist too and works with a lot of teams), he set my pace at 12 mph and told me not to exceed it. While the pace is excruciatingly slow, I find I run into problems if I exceed this pace or if my heart rate runs beyond 140 (way worse if my hr goes to 160'and beyond). If I don't follow these guidelines, I have insomnia that night and will wake up several times unable to fall asleep and only averaging 4 hours of sleep meanwhile waking up with rapid breathing and sweating.

Also, I have been banned from putting any pressure on my legs so hills are out of the question for now. He said for now the most important thing is to build base. The only way to do this is to ride long and slow at a low heart rate. He cited a 50 mile ride he did with some cat 1's. No one went beyond 18 mph. He said in other sports you can push and stress your body to advance to the next level but you can't do this in cycling without a solid base. He could not stress the importance of long and slow.

Hope that helps.