Sleep Trackers - Are They a Good Way to Measure Your Heart Rate?

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Barufus: I am skeptical about some of the specific assessments of REM sleep, deep sleep. But what has been extraordinary to me is it has been to witness how much my heart rate while I'm sleeping is impacted by late drinking or eating. Some people are using them and then getting really anxious because they're taking a message like you had a bad night of sleep very seriously. Barufus: Yes, there is a role for trackers, but used with caution and judiciously.

Sleep can enhance your creativity, lift your spirits, improve your sense of humor, and amplify your sociability. So why do so many of us struggle to get a good night's rest? Russell Foster, a professor of circadian neuroscience at the University of Oxford, says it's because we've let the frantic drumbeat of modern life drown out the steady tick-tock of our biological clocks. That's the bad news. The good news is that Russell's here to share science-backed tips that will have you catching more z's in no time.

Russell's new book is "Life Time: Your Body Clock and Its Essential Roles in Good Health and Sleep."

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