In this case you should move your head up and down and from side to side and, your body must be in a constant motion state. You should try to be creative with your movements all the time so that your opponent could not predict where your head is going to be in your next move. You should be capable to bob and weave all the times for the duration of the boxing match, no matter if you are throwing a punch, moving backwards or forwards. You are to increase the number of your movements when you move towards your opponent.