Doctor & Patient 2

Continue from the previous post..An obese patient came to clinic.Patient: "Doc, i think i'm seriously overweight. What should i do?"Doc: "Oh you just simply need to exercise more."Patient: "Then what kinda exercise should i do?"Doc: " Very easy, it's mainly neck exercise. You turn your head to left, then to right. That's all."Patient: "Huh? Then how many times should i do it in a day?"Doc: "Hmm..