 As long as they're not driving the car off the cliff or setting the house on fire, we don't worry too much about it. We do the same thing with the systems in our body, including our heart. As long as it's not pounding out of our chest or we're not fainting every time we stand up, we assume everything's okay. Well, with the standard American diet, oh, no, we have a good diet. Well, what does that mean?