There are many reasons why people start karate, they may want to keep fit, they may be looking for a hobby, self defense, socialising, or they have simply been fascinated by the whole history and mysticism surrounding karate and the martial arts.
Most people, in my experience, are not very fit when they start karate, fitness seems to be one of the main attractions, for a lot of people.
When a karate-ka (a karate practitioner) has been training for a certain amount of time, they will sometimes, naturally, supplement their karate practice, it may be running, swimming, cycling, weight training, etc, etc. Of course, there will be senior karate-ka who only practice karate and nothing else. But these karate-ka are normally very serious and are practicing five and more classes each week. But what of the person who only trains once or twice each week?
Everybody’s different, some karate-ka like high kicks, some like low kicks, but which one is better?
Tae kwon do, perform very high kicks, that are fast and powerful, some karate groups only practice kicking below the belt and some practice both high and low kicking.
I believe it’s all down to the individual involved. I personally wouldn’t recommend high kicks in self defence, but then again, I’m sure there are people who do recommend high kicks.
Really, it doesn’t matter what someone says or doesn’t say, because when it comes to self defence, you will do, whatever you practice! So if you practice head kicks, day in day out, there’s a high chance, that if you kicked whilst defending yourself, in a self defence situation, the kick will probably target the head.