1. Sports aspect
a) Sport to compensate the modern way of life
b) Physical fitness through gymnastics
c) Improvement of coordination skills
2. Personality development
a) Development of self-confidence / self-assurance; an appropiate manner
can diffuse tense situations.
b) Providing appropiate assistance in an emergency does requires courage,
seif-assurance, skill and trust in God.
3. The spiritual aspect
There are many Master in martial art and writers about martial art, they means, a good martial artist can not practice his style without the far eastern mysticism.
Unfortunately, the mostly people associate martial art with eastern mystic or eastern philosophies.
As Christians as well martial artists and fight oriented sportsmen we also distance ourselves from esoteric practices (New Age) as applied in some martial arts in order, for example, to become "one with the universe", calling up spirits and such like, or to tap into supernatural sources, etc.
To be connected with the "Divine" or any impersonal cosmic power, to learn about salvation and the very peace and/or to make it into eternal life we do not need any wisdoms nor any doctrines coming from other religions or vital philosophies as Christians.
Robert Bussey, Ninjutsu-Master and "The king of combat" wrote about, that he noticed, that he went a better martial artist, after he kicked off the mystic and far eastern religious philosophies out of his life.
Pastor and Martial Artist Raul Ries was asked, if he does see or feel any conflict between these two rolls? He answered: "No, I don’t see any conflict at all, as long as you keep Eastern Religion out of it. I see my martial arts as a gift and a talent from God. Just as a pastor who may ski or surf, I take what God has given to me and do it to the best of my ability. I have a desire to teach people not only self-defense, but confidence and how to become a better person. I don’t teach people to go out and fight others - but to have discipline. When I look at the martial arts, I look at it as a stepping stone for evangelism to people that aren't open to a pastor and the Gospel."
Would do you like know more?
Yet the bible speaks about the Ki and the cosmic energy!
Read the reports of people, they made experience with Ki, QiGong and other far eastern religious philosophies!