Sleep

- Sleep -

Sleep It Off

New research shows that sleep significantly influences metabolism, appetite, and weight management. Could getting more shuteye help you ward off excess pounds?

- Sleep -

Light Rhythms

How and when we are exposed to light can affect our bodies in some surprising (and not always beneficial) ways. Here’s what you need to know about your body’s built-in responses to cycles of light and dark — and how you can make the most of them for better health.