Squirrels are plentiful when the sun’s out, while rats are a more common sight after dusk. Often, the former are described as diurnal, and the latter nocturnal. But for many animals, those ...

Night owls may be fidgety simply because they’re not really tired yet, and that can keep a morning lark awake. The experts said it can help to look at your own sleep habits and hygiene and ...

Are you a night owl or a morning lark? Why genetics dictate when, how long, and how well we sleep. This website uses cookies to improve your experience while you navigate through the website. Out of ...