Mark

Levels of testosterone begin to rise upon falling asleep, peak at about the time of first REM, and remain at that level until awakening

Another anabolic hormone, somatotropin or human growth hormone, also has a characteristic secretion pattern during sleep. Shortly after deep sleep begins, growth hormone concentrations begin to rise, leading to a sustained peak lasting 1.5 to 3.5 hours.

All of these disciplines, and many more, make epistemological assumptions.

In the end, we all take epistemological positions on things, even if we do not realize it

“What an ass you are!” he said. “Are you so unobservant as not to have found out that sanity and happiness are an impossible combination? No sane man can be happy, for to him life is real, and he sees what a fearful thing it is. Only the mad can be happy, and not many of those. The few that imagine themselves kings or gods are happy, the rest are no happier than the sane. Of course, no man is entirely in his right mind at any time, but I have been referring to the extreme cases. I have taken from this man that trumpery thing which the race regards as a Mind; I
have replaced his tin life with a silver-gilt fiction; you see the result—and you criticize! I said I would make him permanently happy, and I have done it. I have made him happy by the only means possible to his race—and you are not satisfied!” He heaved a discouraged sigh, and said, “It seems to me that this race is hard to please.”

“Life itself is only a vision, a dream.”