Special days like Valentine’s day have an interesting effect on us. In ancient Roman times they inspired men to whip each other with animal hides. And today, they encourage men to spend hundreds on prospective partners. In today’s Nudge, researcher Danny Zane explains why this happens, sharing his eye-opening studies on how these special days affect us.  Danny’s webpage at Lehigh: https://business.lehigh.edu/directory/daniel-zane The dark history of Valentine’s day: https://tinyurl.com/yfh68kj5 My experiment with International Podcast Day: https://im.ge/i/PrV4l9 Sign up to my newsletter: https://www.nudgepodcast.com/mailing-list