Supply of high energy is very essential for a sport person to remain active and keep going without complaining. So adequate intake of vitamin B12 is necessary for those who take on aggressive physical activities like a sports person.Vitamin B12 is a good energy booster for the body. It helps to digest the protein part of the consumed food in the stomach. The proteins are thus broken down to form energy. The source of energy makes the body active and energetic. - See more at: http://www.vitaminsestore.com/sports-benefits-of-vitamin-b12/#sthash.Eeit3auT.dpuf