 Health is function. It's not how you feel. It's as simple as that. Health is not how you feel. It's how you function. What does that mean? Well, if your body's functioning at 100%, you're going to live a long time. You're not going to have a lot of pain. When you do get sick, you're going to get better faster. You're not going to develop things like Alzheimer's, Parkinson's, dementia, heart disease, cancer, diabetes. Why? Because your body's not designed for that.