In conflict or confrontation, maintaining calm and seeking non-violent solutions are always the first choice. However, if faced with an unavoidable self-defense situation, understanding human mechanics and the principle of balance can help quickly control the situation. The following are some techniques based on physical principles, **Only applicable to legal self-defense scenarios**： --- ### 1. **Destroy the center of gravity (triangle principle)** -When the human body stands, it relies on the support surface formed by the feet to maintain balance. Destroy the opponent's support structure through lateral or oblique thrust (rather than direct thrust)： -**Leg sweep or hook kick**: Use the ankle or calf area to quickly sweep the opponent's heel or calf, in a direction perpendicular to the direction of his toes (for example, the opponent's left foot is in front, sweep to the right). -**Push the shoulder laterally**: In line with the movement of the footsteps, suddenly exert force on the side of the opponent's shoulder, forcing the center of gravity to exceed the support surface. ### 2. **Control the head and spine** -The position of the head directly affects the balance. Quickly push the opponent's chin or forehead with the palm of your hand (avoid hitting the back of the head), forcing the head to lean back, triggering an instinctive body tilt response. -**Rotation destruction**: Fix the opponent's head with both hands and twist laterally, destroying the alignment of the spine (caution is required, it may cause serious injury). ### 3. **Principle of joint leverage** -**Wrist/elbow joint control**: Grasp the opponent's wrist and flip it to the outside (reverse joint), while pressing forward and down, forcing the opponent's body to tilt. -**Knee joint destruction**: Kick the opponent's knee sideways (not frontally, to avoid fatal injury), instantly disintegrating the stability of the load-bearing leg. ### 4. **Ground gravity utilization** -If the opponent rushes forward, you can grab his arm or collar, pull back with the momentum, and trip his calf with his foot at the same time, using his own weight to accelerate the opponent to the ground. --- ###️Important reminder： -**Legality**: Use reasonable force only when life is threatened, and take the initiative to call the police and cooperate with the investigation afterwards. -**Risk control**: Any action may cause accidental injury, and escape is preferred over confrontation. -**Professional training**: It is recommended to learn self-defense techniques through Brazilian jiu-jitsu, Aikido and other course systems to avoid self-study misunderstandings. Always keep in mind that the best "skill" is to avoid conflict, seek help, or escape from a dangerous environment. When there is a disparity in strength, protecting one's own safety is far more important than subduing opponents.