8 Psychology Facts That Will Make You Question Everything These mind-blowing psychology facts will make you rethink everything about love, emotion, and human behavior. Learn how your brain, emotions, and energy connect in ways you never imagined. 1. Your voice changes when you talk to someone you love — your brain adjusts to sound more comforting. 2. Crying a lot helps your eyelashes grow. Pain literally reshapes you. 3. Sleeping on your stomach? That’s not comfort — it’s your sadness hiding. 4.