Is Morning Photon Shower Really Important for Setting the Clock?

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Exposure to light is essential for setting the clock. Exercise can also help regulate the clock. The sleep wake cycle makes you get up earlier. Morning light does the opposite, it makes you go to bed later and get up later. It seems that exposure to light really matters.

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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