The jab depends on where the elbow is situatted, biomechanicaly thats wherethe tendons and muscles thatmake a jab happen are situatted. for safety and response its best to have it on the ribs for safety and response feel. It knows where it started touch and knows where to come back to feel.I dont like catching Jabs, to many bad habits down that road. put it over the shoulder is a better way or dont be there. The jab is mainly about finding where you are, before he does its a 2 way thing. Movement is the key for the lie youre trying to make, no matter how small that movement is. Flexability of movement and mind is the key to it. Hands above shoulders they are in the wrong place you cant punch, why the elbows arnt where they should be and have no response feel. Therefor the biomechanics have to be wrong to start the motion . Houston we have a problem. before launch.