No I am 13 with a black belt and I am an assistant teacher for my instructor and there are people that are 18+ if you want to start nows the best time to because you won't get very flexible and be able to kick high when you are older
no! really depends on how hard you plan on working at it. everyone moves at their own pace, some take over a year to move up in belts, some show the hard work, talent, and dedication and do it in half the time.
I think it is an absolutely marvelous, wonderful, and exciting idea !!! This is the perfect time since your body is developing good muscle tone and this skill will make your reflexes and brain work together quickly ! I wish you the BEST of luck and am proud of you for choosing something you will use in many different ways. It teaches you to respect others AND yourself and make a good life plan. Wonderful idea!!!