### Arm Triangle Choke
The **Arm Triangle Choke** is an effective Brazilian Jiu-Jitsu (BJJ) submission leveraging pressure from the practitioner's shoulder and opponent's arm. Often applied from the top positions, the arm triangle can also transition into submission opportunities from other positions.
#### Japanese Name
- Japanese Term: **Kata Gatame**
#### Position
- Primary Position: **Side Control**
- Alternative Positions: **Mount**, **Half Guard**
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### Step-by-Step Instructions
#### From Side Control
1. **Secure Side Control**:
- Begin in a dominant side control position, keeping pressure through your hip and chest against the opponent.
2. **Isolate the Far Arm**:
- Force your opponent's far arm (arm that is away from you) across their body or face, aiming to trap it with your head.
3. **Establish the Initial Hold**:
- Slide your arm closest to their head under their neck.
- Transfer your body weight more towards their head to apply pressure.
4. **Transition to Mount (optional)**:
- While maintaining head pressure, step over with your near-side leg to mount. This step deepens the choke, but note it is not always necessary.
5. **Lock the Arms**:
- Join your hands together, creating a solid grip.
- Squeeze your elbows together and tighten your grip.
6. **Drive Your Shoulder**:
- Drive your shoulder into the opponent's neck, directing pressure forward and downward.
- Position your head on the opponent's trapped arm, making sure there's no space for them to escape.
7. **Finish the Choke**:
- Apply gradual pressure by squeezing your arms together and leaning further into your opponent's neck and shoulder.
- Wait for the opponent to tap. Keep release pressure as soon as they signal the submission.
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### Tips
- **Body Control**: Ensure control over your opponent's body by using your hips effectively.
- **Head Positioning**: Keep your head snug against the opponent’s arm to maximize choke effectiveness.
- **Patience**: Be patient when applying the choke, maintaining steady pressure rather than explosive force.
### Safety
Always ensure a safe practice environment. Release the choke immediately upon the opponent's tap to prevent injury or loss of consciousness.