I just ran a search for this and couldn't find what I was looking for.
I remember in an article in the last couple years, I think it was Poliquin (maybe Bowden - maybe someone else) anyhow, I was reading about how cortisol is spiked in the morning in a normal hormonal cycle, and people with too much stress or whatever have trouble waking up because of the imbalance. It might have been one of associated articles for one of his supplements.
Any help on this? Thanks.