Costs of reaching (IMAGE) University of Colorado at Boulder Caption Mary Kaupas participates in a experiment to study how humans of various ages reach for targets. Tubes monitor her breathing to measure how much energy she uses. Credit Erik Summerside/Mary Kaupas Usage Restrictions Use with credit only 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.