The sedentary couch potato adult could benefit from a multi. As an athlete, a complete multivitamin is an absolute must. An athlete running his/her body through tough training sessions without all the proper nutrition in play, would be like trying to run an automobile engine low on oil… eventually something is going to break down.
Don't invite injury, don't invite disease, don't invite low energy and fatigue.. Keep yourself nourished properly with a multivitamin that can make a difference.