I’ve heard that, for sleep in particular, some people have Received Wisdom that everyone needs 8 hours of sleep per day, and if they’re not getting it, that’s a problem, and this has led some people who naturally sleep 7 hours to worry and stress about it, causing insomnia and whatnot.
Of course, ideally such people would have better ability to manage such worries (and better “I should do some more googling before stressing about it too hard” reflexes), but in practice many do not.
I’ve heard that, for sleep in particular, some people have Received Wisdom that everyone needs 8 hours of sleep per day, and if they’re not getting it, that’s a problem, and this has led some people who naturally sleep 7 hours to worry and stress about it, causing insomnia and whatnot.
Of course, ideally such people would have better ability to manage such worries (and better “I should do some more googling before stressing about it too hard” reflexes), but in practice many do not.