Did you know?  blinking could serve as mental rest, not eye lubrication

The intuitive reason why humans blink so much, 15 to 20 times per minute, is for eye lubrication. But research suggests that it’s actually to give our brains a break. Although these breaks only last for a few seconds, they could be giving the brain a chance to go idle and recharge. These 12 “facts” about our brains just aren’t true.