 That is primarily going to be stress over time, mostly, okay? Okay. And I tell people this all the time. If you fell off of your roof, let's say, I'm just going to say off of, not your second story, but you fall off a first story roof, let's say, and land on your rear end, you're going to fracture bone before you're going to bulge a disc. Really? Typically, yes. Those soft tissues of disc are very, very tough, and they're made to take a pounding, okay? Sure, right.