Think About It. Computer processing speeds have increased a million times in twenty years. Don’t you wish your brain could too? A healthy brain is critical to your quality of life. Your brain and nervous system may constitute less than two percent of your body by weight, while consuming 20% of your body’s total energy. If you want to keep your most important personal computer, your brain in tip-top shape, then science suggests that nutrients can help you do it. Source Naturals® supplements can support the growth of healthy nerve cells, the synthesis of neurochemicals, and the maintenance of healthy nerve cell membranes.