If you’re feeling unusually melancholy or apprehensive, don’t discount the possibiiity that your falling serotonin levels could be to blame. Nature’s annual biochemical mischief begins (for me, at least) around the autumnal equinox. Back in the days of our cave-dwelling ancestors, the return of the sun and longer days was never a “given,” and we are still neurologically wired with that memory embedded. #SelfCare