once you do that... just get used to the idea that you never want to throw a punch! the man can grab your limbs and immobilize you. no... pull your arms close to your body and let him close the gap! If you can't run away, like if your indoors or something... let him in close.

once he is right on you, twist your body while using your elbow to his throat. knees to the groin... but avoid going for his face or torso. BOOM! he is down for the count and will never know what hit him.

he will also have his guard down thinking you are helpless.

hope you never have to use this advice