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).
The B complex vitamins are essential, for example, for the conversion of simple carbohydrates like glucose and the carbon skeletons of amino acids into energy, and for the metabolism of fats and proteins.Good sources include brewer's yeast, liver, whole grain cereals, nuts, eggs, meats, fish, and vegetables.Because some B complex vitamins are produced by intestinal bacteria, taking antibiotics may destroy these bacteria.Symptoms of vitamin B deficiency include nervousness, depression, insomnia, neuritis, anemia, alopecia, acne or other skin disorders, and hypercholesterolemia.See also specific vitamins.ecause some B complex vitamins are produced by intestinal bacteria, taking antibiotics may destroy these bacteria. Symptoms of vitamin B deficiency include nervousness, depression, insomnia, neuritis, anemia, alopecia, acne or other skin disorders, and hypercholesterolemia. See also specific vitamins.