@thebluebulb: - Why Humans Are the Only Animal That Cries Real Tears (Tears Are a Painkiller) 🥲 • Humans are the only animal that cries from emotion, and emotional tears contain a natural painkiller. That's why you feel lighter after. Comment "didn't know" and send this to someone who cried this week. #psychology #psychologyfacts #eyes #crying #sciencefacts