Just because you sleep later than your early rising friends doesn't mean you sleep longer than they do; nor does it make you lazier. And yet, the association between the time of day that a person wakes up and how proactive or driven they are is just one example of the many preconceptions that society upholds regarding…
These fish are native to the limestone caverns found deep beneath the Somalian desert. As you might imagine, these are creatures of eternal darkness, and thus the terms "night" and "day" are meaningless. And that's what makes their biological clocks so bizarre.
We know that people born in winter months are at greater risk of neurological disorders, including serious conditions like bipolar disorder and schizophrenia. We're now starting to understand the reasons behind this phenomenon, and it's all about our biological clocks.