Vitamins and minerals serve crucial funtions in just about all bodily processes including the immune, hormonal and nervous system. They are obtained from food, and help to nourish the body and keep it healthy. It's always best to consume a variety of different foods to gain a variety of different nutrients, but when time, lifestyle or life committments don't allow for this, a multi-vitamin and mineral supplement can help. Especially when it comes to gaining strength and building muscle! During intense training sessions, the body's vitamins become depleted, therefore hard training athletes and bodybuilders will certainly require a higher amount of vitamins & minerals than the average person. From energy metabolism to digestion, vasodilation to protein synthesis, multivitamins should be an important part of any effective supplementation plan!