A New Blood Test Can Determine Your Biological Clock Sure, we talk about them all the time: “I’m not a morning person” or “I’m sooooo jetlagged.” Usually, though, it’s just to make conversation, or to play the biology card if we’re feeling especially dysfunctional. But our internal clock, in fact, seems to be a powerful force in keeping us healthy. …

Out-of-Sync Biological Clock Could Be Linked to Depression Our bodies are made up of clocks that keep time with the rotation of our planet — and when these clocks are thrown out of whack, it does more than disrupt sleep. Now, a new study from the United Kingdom adds more evidence that disrupting your body’s clock may also be linked …