Exactly. Sunshine is proven to supress melatonin production (no matter whether night owl or early bird). Melatonin is usually produced at night and encourages y

Exactly. Sunshine is proven to supress melatonin production (no matter whether night owl or early bird). Melatonin is usually produced at night and encourages you to feel sleepy. So later waking up times are certainly helpful, even if the person goes to bed a bit later. https://www.biologicalpsychiatryjournal.com/article/0006-3223(87)90169-7/pdf https://www.biologicalpsychiatryjournal.com/article/0006-322... https://you.com/search?q=light+melatonin+production https://you.com/search?q=light+melatonin+production