>Wake up at sunrise, go to bed at sunset. So 9am and 5pm respectfully for me I guess. That being said the key to it all for a relatively healthy person is men

>Wake up at sunrise, go to bed at sunset. So 9am and 5pm respectfully for me I guess. That being said the key to it all for a relatively healthy person is mental and physical fatigue and lack of stress. On the other hand... my wife used to live near loading-unloading train station and worked at 2 jobs for some time. Takes her 10 minutes to fall asleep regardless.