Scientists say that if you start eating 15% less food by age 25, you could add 4.5 years to your life. The theory is that it lowers metabolic rate and generates fewer “free radicals” in the body. Makes sense, run an engine at a lower overall speed and you’ll get a longer life out of it. Practitioners of the Calorie Restriction diet believe in it, and some think it will lead to eternal life. The tradeoff is that your skin is translucent. Everything in moderation, my friends.