this post was submitted on 18 Aug 2023
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[–] [email protected] 20 points 1 year ago* (last edited 1 year ago)

Blue light suppresses the release of endogenous melatonin. To get an idea of how much it suppresses, it, take a look at the image below. In this image participants were exposed to no light, or a 2 lux light at 460nm (blue line) or 560nm (green line) for 1.5h. source

As for the mental stimulation part, that's going to vary a lot more from person to person and how engaging the content is, but you're right that being mentally stimulated in the wrong ways can keep you awake too.