Hi i have a habbit of tapping my knee in a certain sopt to make it kick i havent been doing it for long but i wanted to ask if the habbit of making it kick is bad and if it is what should i do and also if it is normal that it kicks like that?.thanks?

A knee jerk is a natural reaction to tapping the front of the knee just below the kneecap. We MD's do it in the course of an examination with a rubber reflex hamjer. I see no harm in you doing this. Both knees should react &to the same degree. Otherwise neurological disease is present. Some people have more brisk knee-jerk reactions than others but as long as they're symmetrical, they're normal.