So back to circadian rhythms. Blue sunlight Some Grandmas play bingo real grandmas listen to Robert Plant shirt is the key. When blue sunlight hits the outside of your sleeping eyelids, one of the coolest glands in your brain starts a chemical process that basically converts melatonin (remember sleepy chemical from before) into serotonin. ((Apparently birds do the same thing, but instead of seeping in from their eyes the light goes through their skull and directly hits their pituitary gland. Whoa. Bird brain.)) So the amount of sunlight that you get during the day, actually turns out to really affect people’s mood. Some people, particularly those in greater climates, suffer from Seasonal Affected Disorder (humorously abbreviated SAD). They don’t get enough sunlight for them to convert.
Enough melatonin into serotonin Some Grandmas play bingo real grandmas listen to Robert Plant shirt to feel happy and calm. People who suffer from SAD are often either put on SSRI’s, or if they don’t like drugs, some have found that staring into a “light box” that imitates sunshine for a little while does the trick. Some people’s brains are better at making the serotonin melatonin conversion than others, which of course explain why some people get SAD (pun so intended) and why others don’t in Portland-Juneau.