A: There is a highly specialized and lengthy process used to manufacture Ig. It begins in blood centers across the country where tens of thousands of healthy individuals donate their plasma (the portion of the blood where the immune globulins and other blood proteins are contained).
Runners, especially those training for long distances such as marathons, should consume .5 to .75 grams of protein per pound of body weight. Good sources of protein are fish, lean meat, poultry, beans, nuts, whole grains, egg whites, low-fat milk, low-fat cheese and some vegetables.
Let's consider what types of food a runner needs before a long run, many of which could already be common staples in your diet. The most important things for runners to consider are carbohydrates, protein and fat. And getting the right balance of these three is important. Of a pre-race meal, about 60 percent should be carbohydrates, 20 percent protein and 20 percent fat [source: Tufts ]. Of course, runners can tweak this ratio to their liking.