I have at various times in my life enjoyed an unrestricted schedule and each time reverted to a just-before-dawn bedtime. This preference is an enormous factor

I have at various times in my life enjoyed an unrestricted schedule and each time reverted to a just-before-dawn bedtime. This preference is an enormous factor in my daily life, since, obviously, such an arrangement is impossible in most careers. So I'm never, ever tired when I should be, frequently sleepy when it's inconvenient, and always, always, always, fighting against my body's inclinations.