Internal Clocks Keep Us Healthy

Guest: Carrie Partch, PhD, Professor of Biochemistry, University of California, Santa Cruz The problem with jet lag is not just that you’re tired, it’s that, no matter how tired you are, your body won’t sleep when it’s nighttime. Your internal clock is all messed up. And that’s not just a metaphor. Almost every cell in your body has a timing mechanism – a clock – with the ability to affect your sleep, your weight and even how well medicine works for you.