 Mercury toxicity causes a lot of problems. And every time you take these shots, you're just building it up and building it up. And you say, well, why doesn't everybody react the same? Well, everybody has different size buckets, I guess. Different size buckets of how much toxicity they can handle. And a lot of it is from your environment, your genetics. And so not everybody reacts the same. Some people may be able to handle it. That's why some of your kids...