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 self defense techniques.
No, you are not too old to begin martial arts training. Kenpo regularly has students start from adolecense through their 50's and older. Kenpo is a practical and effective martial art that does not incorporate gymnastics.
The two 1 hour classes are week are recommended, as is practicing at home. As you progress through the ranks if you want more 1:1 attention we offer 30 minute private lessons which can further help hone your skills.
In Kenpo Karate, it takes approximately 5 years to reach student black belt.
My instructor Master Professor Bill Grossman has a great write up about choosing a martial arts school on his website here: http://grossmanskenpo.com/choose_school.php