Find this discussion in another forum. IMO, some valid points are made here. What are the proper solutions? Your thought?
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Here's a detailed explanation why most martial arts don't work in self defense.
1. Wrong assumptions - Martial artists make many wrong assumptions about the streets. They assume it's going to be a fair fight. They assume they're going to face one untrained opponent. I could go on and on. When you're on the streets, you're not in your turf. You're in the criminal's territory. Street attackers don't follow your dojo or MMA gym's rules. They go by street rules which often has no rules.
2. Trying to control too many variables - The second biggest problem with most martial arts is they try to control too many variables. They often do demos. with compliant partners and spar with people of the same style. They add rules of what is and is not allowed in sparring. Truthfully, you can't control everything that happens in the streets. There's going to be things outside of your control. You can't really predict how your attacker will attack. All you can do is make educated guesses.
3. Unrealistic scenarios - Most martial artists engage in very unrealistic scenarios. They assume a street attacker will attack the way in a controlled manner usually in the defender's own art. That's far from reality. Most attackers attack chaotically with wild punches, kicks, bearhugs, bodyslams, headbutts, tackles, sucker punches, etc. It's going to be too fast and chaotic for your techniques to work.
4. Unrealistic techniques - Most martial artists have unrealistic techniques. They're too flashy to work in combat. They usually think in sequences. The problem with sequences is you're assuming your attacker won't react or resist. They usually resist the moment you try to do your first technique which makes it harder for you to execute your second one.
5. Unrealistic mindset - Most martial artists train with a sports mindset. They don't know the difference between an attack and a fight. An attack is a violent act meant to hurt you without your consent whereas a fight is agreed on. In a fight, there's some degree of respect and protection via. referees, mats, gloves, etc. That doesn't exist in a real attack. Street attackers have no problem bashing your skull in with a pipe. There's more blood and guts in street attacks than there is in fighting.
6. Impractical exercises - Martial artists often engage in pointless work outs like flow drills and forms. Flow drills don't translate well to real combat for several reasons. 1) Your attacker won't stay in one range. Your attacker will start in one distance then move to another. 2) There's no intent to attack. People who do flow drills often attack with the intent for their partners to defend and counter then repeat. Martial artists say "well the point of flow drills is to practice your reflexes, speed, coordination, etc." Well, getting those benefits practicing flow drills is the equivalent of playing patty-cakes with your hands. Forms are also useless. You can practice your techniques on an imaginary opponent all day, but things completely change when you're dealing with a real attacker. Martial artists think they're improving their stance, structure, techniques, etc. by doing forms. They're in for a rude awakening when they get attacked and can't maintain their forms under pressure via. getting rammed against, getting punched wildly, etc.
7. Ignorance of weapons and multiple attackers - Most martial artists neglect training against multiple attackers and armed attackers. They'll say "no art can deal with such situations" or "run" to justify bad training. If they do train against them, it's usually scripted and too flashy to be realistic. In fact, most martial artists who get attacked on the streets end up hurt or killed by weapons and/or multiple attackers.
8. Ignorance of stress - Most martial artists don't realize stress can greatly decrease your performance. It's not enough to simply spar full contact. When you reached a certain level of stress, your brain forgets complex motor skills because it's not necessary for survival. That means all your flashy techniques become useless. You'll get tunnel vision, stiff muscles, difficulty concentrating, difficulty breathing, etc. If you don't know how to manage stress, your techniques will suffer and might find yourself getting beaten up regardless if you had the right training or not.
9. Wrong techniques - Martial artists often train with the wrong techniques. They think if a punch or kick lands, it works. Nothing could be further from the truth. If it doesn't end the threat fast be it by breaking your attacker's limbs or knocking him/her out, it's not helping you defend yourself. Like the case with Meredith Kercher. She was a Karateka who got jumped by two people who plotted to kill her with knives. She fought for her life using Karate. She still got stabbed multiple times with knives, raped, and died with a sit throat. People can take Karate punches because they don't pack as much as power as other arts like boxing.
That's why most martial arts are impractical for self defense.