Healthy Football (image) University of Iowa Caption An University of Iowa-led study shows that concession stands can add healthy products without denting sales and profits. The conclusion is based on tracking sales with a school booster club in Muscatine, Iowa. Credit Muscatine booster club, Muscatine, Iowa Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.