system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If blue light disrupts your sleep cycle, why do people fall asleep in front of the TV?

There are countless articles and videos where experts will tell you to not be in front of a screen right before you go to bed. The reason given is that blue light inhibits the release of melatonin and prevents you from becoming sleepy. If that's the case, why do so many people fall asleep in front of the TV? If blue light really does have this effect, it seems like it must be pretty minimal, and it doesn't seem like it would be a major cause of not being able to fall asleep.
gpt
Blue light makes it *harder* to sleep, but not impossible. It might delay or inhibit melatonin release but if you're tired enough, then you're falling asleep even in broad daylight, let alone in front of a TV.