Assuming 8 hours of sleep and a 4am wake up, that would be an 8pm bed time. Assuming the person works a 9-5, that is 3 hours from the end of work until bed time. I suppose that’s enough time to commute, do chores, eat dinner, and engage in a healthy amount of low stress social time… but I have a hard time imagining most people keeping this bed time consistently. Especially since, at least where I live, you’d be going to bed before sunset for about 1/3 of the year.
you’re basing this on a false assumption that all people go to bed after 10pm
Assuming 8 hours of sleep and a 4am wake up, that would be an 8pm bed time. Assuming the person works a 9-5, that is 3 hours from the end of work until bed time. I suppose that’s enough time to commute, do chores, eat dinner, and engage in a healthy amount of low stress social time… but I have a hard time imagining most people keeping this bed time consistently. Especially since, at least where I live, you’d be going to bed before sunset for about 1/3 of the year.