No, that is an urban myth. Martial Artists are not required to register their hands.
No, you will get into shape as you train. We have a series of exercises that you will learn as you progress through the ranking system which will enable you to perform the techniques.
No, you are not too old to begin martial arts training. Tae Kwon Do regularly has students start from 3 years old to adults of all ages.
In Tae Kwon Do, it takes approximately 5-8 years to reach student black belt.