From Scientific American.com: Watching World Series Causes Drop In Hospital Visits

During games three and four of the American League Championship Series (ALCS), when the Red Sox were on the verge of being eliminated by the New York Yankees, the number of ER visits were slightly higher than average. But when the Sox started their comeback, hospital visits started to drop off. The researchers determined that there was an inverse relationship between the number of people watching a baseball game, based on Neilsen television ratings, and how busy the ER was. During the most popular games (game seven of the ALCS and game four of the World Series) hospital visits were 15 percent lower than expected based on historical data.

Just in case you were wondering…