An underhook is a clinch hold that is used in grappling to control the opponent.

The typical response to an underhook is to try to break it, or to establish an overhook.

The double underhooks are considered one of the most dominant positions in the clinch, primarily because they allow for great control of the opponent, and can be used for doing a takedown or throwing the opponent.

The double underhooks can be used to advance into a bear hug by locking the hands behind the back, and holding the opponent close to the chest.

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