TRUE self-defense requires more than the simplicity of KNOCKING THE CRAP out of someone. You have to possess the skills to SEIZE IMMEDIATE PHYSICAL CONTROL of a situation without extreme violence.

Sometimes you only need to break the grip of someone and not their face. The need for this can be in situations as such:

1. A friend grabbing you when you don't want to be grabbed.

2. Your being grabbed by someone who you have not yet identified as a threat or friend.

3. A person grabbing you who you are not yet prepared to start a violent confrontation with such as a 250lb man grabbing a teenage girl.

The only effect that her cardio kickboxing punch to his face is going to have is to piss him off and make him punch her back in hers.

You have to always have options. Watch this video to learn how to break a grab without starting a fight!

Learn more simple techniques like this that anyone can use (men, women children) here