In various combat scenarios like boxing, MMA, and self-defense, the objective is often to neutralize the opponent as swiftly as possible. In such situations, this may be the fastest way to end the fight. Generally, a knockout occurs when you cause the opponent's head to whip sideways, resulting in their brain colliding with one side of the skull, which leads to unconsciousness. Whether for self-defense or to win a match, here are some tested methods to defeat an opponent with a single blow.
Steps
Strike to the temple

Get into position. To throw a punch with your right hand, step forward with your left foot, and keep your right foot behind you. Slightly bend your knees.

Relax your body. When preparing for a punch, make sure your body is completely relaxed. This will help you build momentum for a stronger strike and generate more power in your punch.

Aim for the temple. The temple is located on the side of the face, between the hairline and the eyebrow, at eye level. A well-placed punch to the temple can cause a strong jolt to the brain, making it hit the skull, leading to the opponent being knocked out.

Make a fist and swing your arm. Sometimes using the palm can be easier, but in this case, a fist is more effective. Aim for one side of the face and punch from the side; relying only on the palm makes it harder to generate powerful force.

Use your hips to generate punching power, not just your arm. Increase the power of your punch by rotating your hips as you move closer to your opponent. To throw a punch with more force, you need to engage both your hips and your arm.
Punch the jaw.

Step your left foot forward. If you're preparing to strike with your right hand, your left foot should be in front of your right. Keep your knee slightly bent, and position your left foot slightly behind you. You should feel like your body is slightly coiled, ready to spring into action.

Focus on twisting your torso at the waist. Bring your right elbow close to your body, making a fist as if preparing to punch. Your body should face toward the right. Then, rotate your upper body to face your opponent. This technique will increase the power of your punch.
Look for an opportunity to strike. Timing is key when you want to land a decisive punch. Wait for your opponent to turn or lower their guard before delivering a hook punch.
- If you can avoid their punch, their jaw will become exposed, and their shoulder will drop, giving you a better chance to land your punch.

Tighten your body. Just before you throw a punch, tense your body. Remember to maintain your breathing. This will help focus your energy and tighten your muscles, generating more power. Tensing your body also helps maintain calm and control in case your opponent counters.

Aim for the jaw or the center of the chin. A punch to the jaw or chin is often the quickest way to knock your opponent down. When targeting the jaw, you have two options:
- Uppercut punch. This is when you aim at the jaw and deliver an upward punch, minimizing horizontal movement. The opponent’s head will snap back and tilt upward.
- Side punch. This is when you strike the side of the jaw horizontally. The opponent’s head will jerk sideways and they will be knocked down.

Use your hips to generate punching power, not just your arms. Remember, you need to engage your hips to generate more power by rotating them as you move towards your opponent. Baseball players also use this technique to generate more force when swinging their bats.

Remember to extend your arm with the punch. Your goal is to strike your opponent's jaw either from below or from the side. If you’re performing a side punch, the motion should be slightly curved. You need to direct the punch's trajectory in a curved path rather than a straight line.
Kick to knock down the opponent.

Maintain a strong stance. Position your feet shoulder-width apart and firmly planted on the ground.

Protect your face. Bend and lock your elbows. Then, bring both fists up to shield your face.

Lift your right leg. Swing your right leg upward and target the area just below the opponent’s jaw.

Your opponent’s head will jerk back and they will fall due to losing their balance. Be careful, as this kick could render them unconscious.
Drive your hand into their throat.

Be cautious, as driving your hand into the throat can cause serious injury. This technique can severely damage your opponent’s windpipe. It should only be used in life-threatening situations.

Get into position. Use your index and middle fingers to “thrust” into the opponent’s throat. Position your fingers as if you’re making a peace sign with the same hand. Then press the two fingers together until they meet. Finally, stiffen your fingers to prepare for the thrust.

Point your fingers towards your opponent's throat. Specifically, target the hollow area between the collarbones at the base of their throat.

Use your fingers to thrust into the opponent's throat. Drive your fingers into their throat. This motion forces their throat to collapse, preventing them from breathing.
Advice
- If you find yourself with no way to escape, try delivering a surprise punch when the opponent is least prepared.
- Ensure you land a punch to the temple correctly, as an incorrect strike could be fatal!
- If you must strike first, watch their eyes and punch when they blink. A blink gives you an opportunity to quickly end the fight.
- Study the biomechanics of your body to deliver more powerful punches or kicks.
- A powerful punch to the radial artery on the forearm can overload the movement control center in the brain, causing disorientation or unconsciousness, providing you an opportunity to escape.
- If the opponent runs away, let them go and immediately flee the scene.
- Thrusting into the throat is extremely dangerous and painful; only use it in life-or-death situations. Be ready to take responsibility for your actions.
- You cannot defend a throat thrust without protective gear. This area is not protected by anything, except possibly your chin.
- Avoid keeping your fist too close to your face in a defensive stance, as someone may push or strike your fist into your own face.
- If possible, let the opponent strike first. We are most vulnerable after delivering our own strike. This can also serve as an excuse that you were defending yourself.
- Be cautious when striking the temple, as it can cause severe brain injury and death. Only apply the necessary amount of force.
Warning
- The momentum of a punch is based on a simple physical principle, the relationship between mass and velocity. If you lack mass, you compensate with speed. Of course, having both is even better.
- Attack only when you have no other options.
- Only apply the third method if you don't have the strength to perform any other actions. Thrusting your hand into the neck doesn't require much physical force.
- Remember, you will face the consequences of your attack, regardless of how you choose to strike.
- Use this method only if there's no other escape route available to you.
