Looking for a protein powder? Look no furtherâ€”whey protein is one of the highest-quality bioavailable proteins on the market. The reason it’s so great? It provides the raw material for glutathione, which may be the body’s most important antioxidant. French studies have revealed that whey protein may even be integral in helping people lose weight. If you eat whey before exercising, according to the studies, fat burning is increased and lean body mass is maintained. If you want a healthy, tasty snack, try a whey protein shake with berries, which also add fiber and some vital carbs, before working out.