When working out with a cardio machine, you have in mind adding more strength and warming up your entire body. Most people desire to exercise using this workout equipment but lack the fundamental of exercising with the cardio machine. We work you through the functions exercising with the concept 2 machines. Here are the 13 functions of the concept 2 machine. 1. Concept 2 rowing machines help users to exercise the muscles of their back, legs, arms, shoulders, core, and cardiovascular systems. The