Someone whose job is to look after children all day in a daycare—how do they endure all that noise?

 Someone whose job is to look after children all day in a daycare—how do they endure all that noise? And they probably can’t wear headphones or magically make themselves deaf, so they constantly absorb that racket. This could even be my own unofficial eternal profession, but it can’t be said that I get a “salary,” and the noise I endure doesn’t come from little kids screaming but from the grunts of big bodies.