He tested the program on a group of 1,000 volunteers, who give glowing testimonials about their experiences: "I can see a marked improvement in my mind, spirit, and body"; "Letting go of sugar has been great"; "I lost 20 pounds without dieting!" Null then explains the multipronged antiaging "protocol." First, he advises that you detoxify your body to prevent aging from free-radical damage; then, fortify your immune system with proper nutrition; and lastly, build bone mass (through diet and exercise) to prevent osteoporosis and weakness. This isn't a quick-fix program; it fills nearly 300 pages, with suggestions ranging from sealing off the vents from your garage to your house to drinking a gallon of purified water a day. Null also suggests a low-fat, organic diet, including herbs, nutrients, and other supplements (including acetyl-L-carnitine, phosphatidylserine, zinc, and many in between) that he says may extend life and that helped him run a 50K national championship. The final segment covers "mental gymnastics," including a self-quiz to analyze your value system, levels of anger and stress, and their potential detrimental effects on your health. This is a comprehensive health program, but one that requires a good deal of dedication.