Thanks. This is one of the occasional comments I find on HN that is so helpful that I put it in my notes so that I can refer to it again in the future. While t

Thanks. This is one of the occasional comments I find on HN that is so helpful that I put it in my notes so that I can refer to it again in the future. While the parent article itself is really great and somewhat similar, (a) you have a better explanation of melatonin, and (b) the morning wake-up light you recommend appears (from quickly scanning comments) to be much higher quality than the one the parent article links to.