“In school, when I was young, teachers walked around the classroom, man, and pop-pop-pop.” He smacks the back of his own head for emphasis. “You’re breathing from your mouth, you get pop,” he says. Mouthbreathing leads to sickness and is disrespectful, he told me, which is why he and everyone else he grew up with in Puebla, Mexico, learned to breathe through the nose.”
