A yawn spreads quickly. You see someone yawn, you think about yawning, or you even read the word “yawn”—and suddenly you’re doing it too. This episode begins by looking at why yawning is so contagious, what theories actually hold up, and what science still can’t explain. https://www.livescience.com/human-behavior/why-is-yawning-contagious

A Christmas tree seems like such a natural part of the holiday season, but the tradition behind it is rich, surprising, and deeply woven into American history. Why an evergreen? Where did the practice originate? How do they select the giant tree for Rockefeller Center every year? Here to explain the story and the symbolism behind the Christmas tree is Trent Preszler, professor of Applied Economics and Management at Cornell University and author of the book Evergreen: The Trees That Shaped America. (https://amzn.to/43NUVSj).

Dining out today is nothing like it was just a few years ago. Prices are higher, tipping culture has shifted, customer expectations are changing, and restaurants face tighter margins than ever. Adam Reiner joins me with a behind-the-scenes look at what’s really happening in the industry and offers practical advice for getting the best experience when you eat out. Adam is a food writer whose work has appeared in Bon Appétit, Food & Wine, and New York Magazine, and he’s author of The New Rules of Dining Out (https://amzn.to/3Xhg0kf).

You would think eating food should satisfy you—yet some foods do the opposite. Highly processed foods digest so quickly and trigger such different responses in your body that they can actually leave you hungrier. I explain what the science shows and why these foods can lead to overeating. https://www.nih.gov/news-events/nih-research-matters/eating-highly-processed-foods-linked-weight-gain

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