Rowing is a historically rich sport that can now be imitated on an erg machine at Marin County's Body By X. Rowing incorporates finesse, strength, endurance, and overall fitness. In fact, it’s one of the few non-weight bearing exercises that works all of the major muscle groups, including your quads, biceps, triceps, lats, glutes and abdominal muscles. And let’s not forget about the cardiovascular benefits. A stronger heart and stronger muscles. Bet you didn’t know one piece of equipment could do all that!