Sleep is incredibly important at all points in our life but for some reason we tend to sleep less as we age. Now scientists think they’ve discovered why and that could be the first step toward doing something about it.

It’s a known fact that as we age, we sleep less. But the reasoning behind this phenomenon is poorly understood. Do older adults sleep less because they need less sleep, or because they simply can’t get the sleep they need? In a review out today in the…