Every Triathlete, Marathon runner, Crossfitter, Body Builder, Rock Climber or all around fitness junky has had sore shoulders or sore legs which we call DOMS (Delayed Onset Muscle Soreness) following a big work out. How do you relieve DOMS? You need to move the tissues (muscles and connective tissues) in that sore region. Rather than doing air squats all day following heavy squat and deadlift day, put on the Marc Pro for the needed and required muscles activation with out having to load the joints and look silly at your desk trying to to a million squats and lunges to make yourself less sore. The Marc Pro provides the needed muscle activation to clear the muscle collagen bond tightness, clear the bi-product of your previous days work. The Marc Pro is a Motor Nerve Stimulation machine. The Marc Pro will have you back into normal healthy movement patterns for the next workout.