Some people stay awake late at night while other are a morning person. There are different pros and cons of being both but according to a study being a "morning person" can lead to greater well-being as well as lower the risk of developing schizophrenia and depression. However, for some it is hard to be a morning lark, and they would rather be a night owl. Various research have explained an individual's genetics as the reason behind this.

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The study, published in Nature Communications, revealed some of the inner workings of the body clock, shedding new light on how it links to mental health and disease. According to study being genetically programmed to rise early is associated with better mental health, but does not affect body mass index (BMI) or risk of Type-2 diabetes.

Lead researcher Professor Mike Weedon, from the University of Exeter Medical School, said "This study highlights a large number of genes which can be studied in more detail to work out how different people can have different body clocks.”

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Importantly, the study also showed that the genetic variants the researchers identified could shift a person`s natural waking time by up to 25 mins - changing some people`s waking time from 8am to 8.25am, for example.

Samuel E. Jones, of the University of Exeter Medical School explained, "Our work indicates that part of the reason why some people are up with the lark while others are night owls is because of differences in both the way our brains react to external light signals and the normal functioning of our internal clocks,"