You will have to help her understand the benefits of the study of Martial Arts. There is also a cost factor involved that will have to be fully understood. You are going to have to demonstrate that you are going to stick to the study of a martial art, a few months is no good, it take several years.
if you realy dont want to take matierial arts you tell her how you feel about the class and what you really want to do so my advice fallow your heart
Not on purpose... in martial arts, it's an effective method to smash the arch of your foot, causing great pain and requiring surgery.
convince herif it doesn't work convince your dad
Tell her you are responsible
Brownose
Just keep asking her about it. It actually took me three years to convince my mom and dad to let me get my bellybutton pierced.
Prove to your mom that you are ready and able to handle the work as an actor/actress. Show that you've awesome acting skills and prove that it would be a rather bad idea not to let you join acting.
Hey Mom, I want to join the Army.
sorry but that really depends on your mom....
Buy your own
Just ask her for one
Move out.