Most relevant would be mental art of toughness and thinking under stress. That is the key. You would rarely be in a dangerous situation around martial artists. Most such people who cause danger will be those who are untrained but violent. So mental acumen is top. And that comes with regular practice, like any martial art. Combat mind takes time to nurture.
Then, Krav Maga will be most practical. You incapacitate the enemy and escape. I learn Kungfu that combines Krav Maga and many other arts.
Also, escape skills means you need to know how to run fast for long time, how to jump, how to balance, how to roll etc.
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