 We have two different levels. Well, yeah, there's too much water, too low. There's too much oxygen. I mean, you can have too much and too low of anything, but it's not practical. It's not going to happen, okay? And arthritis. We spend each year, George, $626.8 billion a year just to treat the symptoms of arthritis, not to prevent it or cure it. $626.8 billion. Type 2 diabetes, we spend $342 billion a year just to treat the symptoms, not to prevent it or cure it.