head movment?

[cocobeware]

Been working on my head movment latley and i watched a freddie roach training dvd the other day and he says that 90% of the time if you finish a combination on left hook then youre opponents counter would be the right hand so you would roll under it and step out to youre left and like wise if you finish on a right hand then youre opponent is most likley to throw a left hand and you should roll under and to your right is this true?I didnt know this and i seem to have developed a bad habbit of trying to roll to my right after throwing the left hook which im trying to correct now.Does anyone know any good drills that i can practice on my own to make this become more automatic?