Marmots (IMAGE) University of California - Los Angeles Caption During their time hibernating, marmots’ breathing slows, they burn a single gram of fat per day, and their body temperature plummets to the point that “they feel like fuzzy, cold rocks.” Credit Daniel Blumstein/UCLA Usage Restrictions Note credit with use. 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.