> Is it because going to bed at 9:30 is magic? I guess, the inner clock is adjusted to that time because that's when the sun goes down in summer, and when mela

> Is it because going to bed at 9:30 is magic? I guess, the inner clock is adjusted to that time because that's when the sun goes down in summer, and when melanin increases, because of changing light levels, we become sleepy. just , a shot in the dark so to speak ;)