babycadeau . Heavy physical activity increases oxygen consumption and therefore, raises potentially damaging by-products called free radicals.Another valuable element to note is the quality of the product. As supplements only have to be produced to food standards to satisfy the industry requirements, it is relatively hard for companies to monitor exactly what is added to their nutritional products. Products may get contaminated, or might not have the same dosages in each individual tablet and we need consistency!As a former health and fitness professional I have the opinion that it is more logical to provide our bodies with a surplus, providing that the levels that we consume are not in harmful dosages. By providing our body with more than it requires, it can absorb as much as it requires and reject what is not required. Vitamins and minerals that are not required will be excreted and so will not adversely affect our health.Some supplements suppliers produce nutritional products to pharmaceutical grade manufacturing standards, so they have better control of the makeup of each tablet. This also decreases the chance of contamination with dangerous, or illegal substances. With this noted, I also recommend using nutritional supplements that are of a pharmaceutical standard.In summary, you are better consuming pharmaceutical grade supplements, which provide advanced quantities of micro-nutrients.Do you want to learn more about world-leading nutritional products? Visit http://www.mlmsummittraining.com/index.php/mlms-team/usana-products/ to buy usana products.