Post-exercise Caffeine Helps Muscles Refuel (IMAGE) American Physiological Society Caption Muscle biopsy. Credit John A. Hawley, RMIT University Usage Restrictions Credit John A. Hawley, RMIT University 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.