For many people, protein powders derived from milk or other animal sources is not an option. Whether you're lactose intolerant, vegetarian, vegan or just looking for a high quality protein, Soy protein is an accommodating option for anybody taking their health and fitness into consideration. Soy protein can be used as a pre-workout or post-workout protein, and is also great as a protein shake to take any time of the day. Best of all, soy protein is incredibly lean in terms of calories and carbohydrates