Martial arts is cool. I've been into Martial Arts from past 6 months now and doing great. I am in Kyo-khashun (Or whatever the spelling is ). What specific field you are in Shahab?
took tae kawan do classes about 6 years ago , i did it for year or two . it was quite useless for me cause i never need to fight anyone ... however it excercise during it helped me to get rid from gas and acidity problems lol .
I started when I was 7 but I broke my leg while practicing after that I quit. But good luck to you Sahab6.
I used to when i was 11 but then things happened. Now i have no time although i love martial arts and would love to start again. Im planning on starting again when im done with my masters degree!
I'd suggest Japanese Shotokhan Karate. It's quite hard and usually will end up leaving you with a more balanced stance etc. Say hello to ab strength