I heard about a new research study that shows that fewer hours of sleep in adolescents is associated with greater weight gain (or technically speaking greater increase in body-mass index or BMI) and that sleeping for longer may help reduce obesity. (Here’s the link.)

Actually that’s no great surprise. A link between sleep and obesity has also been found in adults. And there are quite a number of studies showing the link, as this article on sleep deprivation and obesity makes clear.

Why should this be the case? Continue reading →