There isn’t a lot of advice in Brazilian Jiu-Jitsu that can be used in the vast majority of positions and techniques. However, some advice is like that – for example, if you want just about any attack to succeed, you’ll have to first break the opponent’s posture.
John Danaher explains why:
Sometimes when you attempt a submission hold on an opponent, they feel so strong that you get the feeling you have no chance of success. If they are working from a strong posture you may well be correct.
HUMAN STRENGTH IS LARGELY DETERMINED BY POSTURE.
Professor Danaher explains that, if you break the opponent’s posture, you’ll make them weak and vulnerable to your attacks:
Think about something basic like a squat. If your posture is good, you’ll be able to put up some impressive weight. If it’s bad, no amount of innate strength will help and your poundages will be unimpressive. Jiu-Jitsu is the same.
If your opponent is in good posture, he’ll feel impressively strong when you go to attack. If you can break his posture and put his body into unnatural or forced contortions… He’ll feel weak and vulnerable to your attacks.
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