If you feel exhausted and weak, have a pale skin, and notice paleness of the lips, you have difficulty in remembering things that were not a problem to remember before, and you quite often get sick - you probably have an iron deficiency. In this case the supplementation will be necessary, because it is very difficult to balance levels only with diet. And what are the benefits of iron dosage for people intensively working out? For sure their muscle strength will be improved and recovery time will be shortened, because iron enhances the formation of red blood cells, and thus accelerating the transport of nutrients and oxygen and removal of toxic metabolites. Also remember that the iron should be taken with such compounds as vitamin B6, B12, C and folic acid, as they accelerate blood-forming processes, but also they facilitate the absorption of iron in the gastrointestinal tract.