Father & Son Play Baseball (IMAGE) MediaSource Caption Matt Hurt shows his five-year-old son how to swing a baseball bat. A new study suggests that fathers can give their children a genetic head start on a healthy metabolism by exercising prior to conception. Credit The Ohio State University Wexner Medical Center. Usage Restrictions All multimedia is available for free and unrestricted media use with a courtesy to The Ohio State University Wexner Medical Center. License Licensed content 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.