What's interesting is that there's a reversal of class today. Now, it's only the very wealthy who can afford to be physically active and to eat a good diet, and it's the lower classes, the people in the working classes that cannot afford to actually be physically active. People who are well-off, the one-percenters or maybe the five-percenters of our country, can afford to go to health clubs and take yoga classes and buy organic food. But most Americans today, particularly those who are in the working class, have to work all day long, they have to commute long hours. They don't have time to exercise; they can't afford to buy food that's very healthy. The result is that there's now an interesting reversal that never occurred before in human evolution, which is that the wealthier you are, the healthier you are. It used to be that it was only the very wealthy who could afford to get heart disease.