๐ฅฑ๐ง Neuroscientists at #UNSW #Sydney used #MRI scans to show that yawning moves cerebrospinal fluid and venous blood out of the skull. The biological maneuver differs from deep breathing and suggests that yawning helps clear metabolic waste or cool the #brain.
๐ https://www.sciencealert.com/yawning-does-something-unexpected-in-your-brain-mri-scans-reveal
#sleep #biology #neuroscience #health #science #physiology #evolution #wellness






