I'll take this opportunity to make a related pitch regarding back pain in particular, which can become more of a problem if you are sedentary as so many programmers are: if you have chronic back issues you owe it to yourself to at least check out Stuart McGill's Back Mechanic (https://www.backfitpro.com/books/back-mechanic-the-mcgill-me...). It's very much in line with this post; in particular the idea that you just have to deal with back pain as a fact of life is--for most people--not the case. Please take a look if you are struggling with back pain. The process he lays out takes work but it's based on solid research and experience and it has helped me tremendously.
Instead the locals offset the time by 6 hours. So the AM cycle starts at dawn (i.e. 6am), and the PM cycle starts at dusk (i.e. 6pm).
Greeted with a paywall on the source. Hypocracy...