Vitamins and Minerals, like essential fatty acids are a part of the diet that many, many people neglect. Yet making sure your body has enough of the key micronutrients is just as important as monitoring macronutrients (protein, carbs and fat) when you look at the complete picture.

This is especially true of people who train regularly - many people who train with weights will be deficient in key nutrients if they don't take a multivitamin because of the often narrow high-protein only diet.