Gradually increasing volume from silence is not about forcing vocalization, but a recovery path that respects the body's rhythms. Many people struggling with anxiety or selective mutism are not unable to speak, but their bodies freeze when forced to increase volume. The goal of this exercise is not to speak clearly all at once, but to treat volume as an adjustable parameter. The first step is to allow silence to exist; silence is not failure, but a starting point. When the body is allowed not to speak, tension actually decreases. The second key is to start with non-verbal sounds, such as soft exhalations, hums, or low vowels, to awaken the vocal system in a low-threat state. The third stage is from single syllables to words; choose the easiest syllables and pronounce them in a safe environment at an almost inaudible volume, aiming only for appearance, not clarity. The fourth point is volume gradient; increase only a small level each time, for example, from audible to audible to the other person, allowing the body to learn that change is controllable. The fifth stage is rhythm coordination; synchronize vocalization with breathing, speaking while exhaling to avoid tension caused by holding your breath. The sixth key is to record success; mark and affirm each increase in volume to allow the brain to form positive predictions. It is important to understand that increasing volume is not about willpower overcoming fear, but the result of a gradual accumulation of safety. When the body repeatedly experiences that speaking does not bring danger, the volume will naturally increase and the expression will recover accordingly.