Author Martin Bier in an aerodynamic tuck (IMAGE) American Institute of Physics Caption Author Martin Bier in an aerodynamic tuck, a cycling position that reduces wind resistance. Credit Martin Bier Usage Restrictions Journalists may use this image only with appropriate credit and when reporting on this research. License Original 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.