Protein intake is important for all athletes, especially while endurance training. Often times, athletes tend to focus on carbohydrate intake rather than focusing on protein intake, which could have a negative effect on health and overall athletic performance. Muscle growth and repair is heavily dependent on protein levels. Athletes who don’t fuel their bodies with sufficient amounts of protein will end up canceling out the benefits of a workout, making the athletes more susceptible to fatigue and anemia. Protein deficiency is can be a true threat to an athletes ability to achieve peak performance, however this can be combated by drinking a protein shake on a daily basis, in order to stay on top of the game, and giving the body what it needs to sustain daily workouts. There are countless options of protein shakes, but it is important for athletes to be knowleagable of which one would work best for their lifestyle.