Interestingly the fix to my seasonal affective disorder was a move a couple years ago into an apartment with no blinds and tons of sun in the morning (our previ

Interestingly the fix to my seasonal affective disorder was a move a couple years ago into an apartment with no blinds and tons of sun in the morning (our previous place had black out blinds). We never got to adding blinds, and we have no intention to at this point—I wake up with sunrise naturally nowadays around 6am and haven’t had SAD since. I’m of the impression that black out blinds are generally poor for sleep hygiene (unless you’re in a really bright place and they’re a necessity), as they disrupt some of the most natural and most potent zeitgebers available. That isn’t to say that a knowledgeable and enterprising person couldn’t employ black out blinds when crafting their sleep environment, but most people won’t balance the different influencing factors thoughtfully.