The front headlock is the highest-percentage grab in real fights - simple, powerful, and vulnerable to a trained posture-and-circle response.
Escape a standing front headlock before it becomes a choke or a takedown.
The front headlock steals your posture and your air. Job one is to get your head back up. Drive your hips forward and lift your chest; do not accept the folded position.
As posture returns, both hands attack the choking wrist. Peel the pinky first - the pinky is the weakest anchor of any grip - and rotate the arm across their body.
Now circle. Step your near foot behind their lead leg and walk your body to the open side. Their headlock unravels and you emerge at their back with strikes, control, or a clean exit.