Jacob Meyer in gym (IMAGE) Iowa State University Caption Iowa State's Jacob Meyer says subtle changes may be easier for people to maintain than committing to a gym or more rigorous activity. Credit Christopher Gannon, Iowa State University Usage Restrictions None 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.