If I were to work on it, I'd look into excess serotonin from gut issues that are latent, and into blood sugar issues, in order of likelihood.Just wake up frequently. Haven't quantified it.
If you have frequent bowel movement, is it possible it is a sign of high serotonin? Bowel movement that is driven by peristalsis (autonomic control of intestinal muscles) instead of serotonin is what I consider healthy. Ray says good thyroid and having good magnesium stores contributes to peristalsis.