So most of us have probably seen Iain's explanation of the opening salutation in Naihanchi. The particular part about using your own head to turn the opponent's head and control was really fascinating to me as I practise Tekki Shodan, which does not demonstrate the pushing down on the head nor the turning of the head.
There was a video I came across today which has professional Muay Thai fighter, Sylvie Von Duuglas discussing using the head or the "9th limb" in Muay Thai. I thought she covered some important points about the nuances of using your head in the clinch to better control your opponent, particularly weakening structure, protecting your vital targets, and, of course, inflicting pain.
Anyway, I thought it would be worth sharing with you guys, as the first thing I thought to myself when I saw it was "Naihanchi!".