The best swimmers among female Ironman triathletes complete the swimming portion of the event in 50 minutes to an hour. At the World Championship, the cutoff time for all competitors is two hours, 20 minutes. Any participant who fails to complete the 2.2-mile swim within that time is eliminated from the competition.
Vitamin K: One of two naturally occurring fat-soluble vitamins (vitamin K1 and vitamin K2) needed for the clotting of blood because of an essential role in the production of prothrombin (a clotting factor).
Vitamin B-12, one of many B-complex vitamins, called cyanocobalamin, is absorbed from the terminal part of the small intestine, called Ileum.It gets bundled with a protein made by the cells in the stomach called Intrinsic factor.The deficiency of this protein in certain persons, causes pernicious anemia.