I agree. Modern life has created so many ways that artificially change our sleep/wake rhythms unintentionally (for example, binge-watching a show 'til 3am even

I agree. Modern life has created so many ways that artificially change our sleep/wake rhythms unintentionally (for example, binge-watching a show 'til 3am even though I was dead tired 3 hours ago and probably could've fallen asleep immediately). I'm 30 and I'm still not sure whether I'm a night owl or not, even though I'm awake late into the night 90% of the time. Could just be a habit that I've developed over the years with the aid of artificial lighting and computing.