You tighten your grip around your target’s throat.
While using this style, you can choke your opponent when you successfully maintain a grapple instead of choosing to damage, move, pin, or tie up your opponent. This suffocates your opponent. The grappled opponent can take a breath during any round in which you do not maintain the grapple.
Pathfinder Player Companion: Melee Tactics Toolbox © 2015, Paizo Inc.; Authors: Paris Crenshaw, Ron Lundeen, and David Schwartz.