Couple Prepares for a Bike Ride (IMAGE) NIH/National Cancer Institute Caption An African-American man adjusts an African-American woman's helmet strap as they prepare for a bicycle ride. Credit National Cancer Institute 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.