Thank you so much! If you email me (see my profile--also anyone is invited to do this), I may be able to help you get a copy of "Energy Thieves" in English! :-)

Thank you so much! If you email me (see my profile--also anyone is invited to do this), I may be able to help you get a copy of "Energy Thieves" in English! :-) Unfortunately melatonin gives me skull-crushing headaches! :-( I am so glad that melatonin works for you! Interestingly, there is a calculation that is used with lighting called melantopic ratio. This is the best writeup on circadian lighting, by far [1]. Here is the best website [2]. Here is the best overview [3]. This has the best pictures for sunrise/mid-day/evening/night lighting (flip through the pages) [4]. The Dreem 2 [5] headband is probably a better option in terms of comfort, rather than the OpenBCI EEG, for most people. It unfortunately does not meet the requirements for it to be a "home sleep lab", though. Know that the company is required to follow the GDPR, which is useful, and good to keep in mind for the end-user. Anyways, I initially found out about chronotypes from reading a Financial Times article, with my subscription (see the gifted article link I provided below) [6]. Apparently it is a huge deal in Switzerland and Germany, which I found out by doing more research into it online, and it is studied there extensively. I also gifted a Financial Times article by a sleep expert mentioning chronotypes and how to get a good night's rest [7], if you want to read that. [1] Circadian lighting for designers and manufacturers: https://www.lrc.rpi.edu/healthyliving/img/background/additional_information/downloads/Circadian-Effective%20Lighting%20Steps%20for%20Manufacturers%20and%20Designers.pdf https://www.lrc.rpi.edu/healthyliving/img/background/additio... [2] Lighting Research Center: https://www.lrc.rpi.edu/ https://www.lrc.rpi.edu/ [3] Creating the circadian lighting toolbox — Bringing the language into practice (MAGAZINE): https://www.ledsmagazine.com/lighting-health-wellbeing/article/14197266/creating-the-circadian-lighting-toolbox-bringing-the-language-into-practice-magazine https://www.ledsmagazine.com/lighting-health-wellbeing/artic... [4] The Design Implications of Circadian Lighting: https://leducation.org/wp-content/uploads/2019/04/Design-Implications-of-Circadian-Lighting-Underwood-2019.pdf https://leducation.org/wp-content/uploads/2019/04/Design-Imp... [5] Dreem 2 Headband: https://dreem.com/ https://dreem.com/ [6] How to hack your circadian rhythm: https://on.ft.com/3lSLZSW https://on.ft.com/3lSLZSW [7] Sleep expert Matthew Walker on the secret to a good night’s rest: https://on.ft.com/2Whr8O5 https://on.ft.com/2Whr8O5