Some women have decided to attend self-defense classes after an apparent epidemic of sucker punch attacks have spread across New York City. Inside Edition’s Alison Hall took part in a class at a self-defense group called Fit Hit. Fit Hit instructor Tatiana Firpo showed Hall a particular move that could ward off a sucker punch attack. It's called the “answer-the-phone” block. If the attack continues, Firpo says to fight back.