What Makes Someone a Night Owl?

Hooo is Really a Night Owl?
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Are you a morning person or a night owl? I've never been an early bird – and lately I've been wondering why. This pattern in your sleep/wake cycle is called your "chronotype" and appears to be influenced by your genetics. It has some interesting effects on your health – from some people being more agreeable and proactive to others eating and drinking more. Do you notice an effect on your health? And, perhaps, have you noticed your chronotype change over time? 🌚

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References 🗂
23andMe study: https://www.nature.com/articles/ncomm...
Temperament differences study: http://www.tandfonline.com/doi/abs/10...
Another one: http://www.sciencedirect.com/science/...
Personality differences: http://www.sciencedirect.com/science/...
Morning people are more proactive study: http://onlinelibrary.wiley.com/doi/10...
Morning people procrastinate less: http://www.ncbi.nlm.nih.gov/pubmed/18...
Larks are happier: http://psycnet.apa.org/record/2012-02...
When are people most creative: http://www.tandfonline.com/doi/abs/10...
Health, wealth and wisdom: http://www.bmj.com/content/317/7174/1...
White matter study: http://www.sciencedirect.com/science/...
Study on hormone release timing that I didn’t actually use, but it was interesting: https://www.ncbi.nlm.nih.gov/pubmed/2...
Night owls are smarter: http://www.sciencedirect.com/science/...
Night owls have more sex: http://www.sciencedirect.com/science/...
Night owls consume more nicotine and caffeine: http://onlinelibrary.wiley.com/doi/10...
People are more creative on their off-hours, whatever that means for them: http://www.tandfonline.com/doi/abs/10...
Evolutionary Biology of sleep variation: http://www.smh.com.au/technology/sci-...

Image: https://en.wikipedia.org/wiki/Benjami...