For females this would usually be finished in about 1 hour 15minutes. For males this would be finished in about 1 hour. Olympic distance triathlon (1500m / 40m bike / 10km run) For females this would take about 2 hours 25mins. For males this would take about 2 hours. Half Ironman (1.9km swim / 90km bike / 21km run) Females usually take about 5 hours 30mins.
Zinc. Night blindness may also be the result of a zinc deficiency which reduces the activity of an enzyme that helps the body produce vitamin A (retinol dehydrogenase). Research has shown that taking a zinc supplement is helpful. Healthcare providers often recommend 15 - 30 mg of zinc daily for vision.
Ah, vitamin A. Cancer fighter, bacteria killer and wrinkle inhibitor. This all important nutrient is well known for its undeniable ability to defend against viruses and enhance immunity. Thus, it should come as no surprise that vitamin A can also help relieve aqueous-deficient and evaporative dry eye symptoms.Getting enough vitamin A (aka retinol) in your diet is essential for good vision health. In fact, vitamin A deficiency can cause cell mutations to the cornea.Often, this disrupts the tear film and leads to dry, irritated eyes.h, vitamin A. Cancer fighter, bacteria killer and wrinkle inhibitor. This all important nutrient is well known for its undeniable ability to defend against viruses and enhance immunity. Thus, it should come as no surprise that vitamin A can also help relieve aqueous-deficient and evaporative dry eye symptoms.