If your score is one of the top 20 from the last 30 days or so, the name you enter will be shown in the Top Scores Table. If you are under 30 years old, you do not need to think about heart disease. There are some good reasons for eating healthy foods. But why bother, people feel just as well whether or not they eat healthy foods. Besides, eating what you like is more pleasurable.
Oil reduces friction because a. Molecules are always moving, oil slows down that motion.
Slower moving molecules get out of each others way more easily. Oil keeps moving surfaces separate from each other. Friction produces heat. Oil provides a route for heat to escape. Lower temperatures means less binding of the surfaces.