Thanks for being so prompt Jwbloodline, but I still feel it would be wrong in the eyes of Jehovah to come close to hurting another person, even if they can tap out there is still a chance to be injured. But of course it is up to the individual to decide after much consideration on the matter of sports.
It is best to the turn to scriptures for advice on self defence sports, I went to a scripture regarding the need to stay meek and I included another bible students view with the boxing sport and he included very good bible information and is working toward a full dedication to God.
JESUS Christ, the greatest man that ever lived, encouraged meekness by both precept and example. "Blessed are the meek: for they shall inherit the earth," said he, and he urged others, "Learn of me; for I am meek and lowly in heart."
So let me explain further why I used the scripture.
The heart is the place where your important qualities are made manifest in such traits as mildness, patience, and reasonableness. So humility is defined in terms of selflessness and is an essential root of all wisdom.
In a 1958 Watchtower titled: Blessed are the meek, it writes,
Then what does it mean to be meek? It has been said that a meek person is a teachable one. True, one who is meek is willing to be taught, but meekness includes far more than that. Bearing this out are the definitions given for "meek": "gentle or mild of temper; self-controlled and gentle; not easily provoked or irritated; forbearing under injury or annoyance." In modern Bible translations the terms "mild" and "gentle" frequently replace the term "meek" found in older versions. No question about Jesus? being meek. And another notable example of meekness found in the Scriptures is that of Moses, whom God?s holy spirit inspired to write: "The man Moses was by far the meekest of all the men who were upon the surface of the ground."?Num. 12:3.
So as long as those qualities are still kept strong... having self control and reasonableness, then I am sure it can give you an idea of what kinds of sports are right to take part of.