Post #1918421

Each person yawns in a unique way – so the tongue motion during the yawn is different between people, but very consistent for each person," Martinac says. "It's almost like a fingerprint, so you could possibly identify someone just based on how they yawn." https://www.sciencealert.com/yawning-does-something-unexpected-in-your-brain-mri-scans-reveal #biometrics