In Soto Zen practice, shikantaza, or "just sitting" meditation, is a form of seated meditation that emphasizes the cultivation of awareness and presence in the present moment. In this practice, the role of breath is essential as it serves as a focal point for the meditator's attention.

The breath is seen as a powerful tool for developing mindfulness and concentration. In shikantaza meditation, the meditator is encouraged to simply observe the breath as it naturally flows in and out of the body, without trying to control or manipulate it in any way.

Through this observation, the meditator becomes more attuned to the present moment, letting go of any distractions or thoughts that may arise. The breath serves as an anchor, allowing the meditator to return to the present moment whenever the mind wanders.

As the meditator continues to focus on the breath, they may begin to notice its subtle qualities, such as its rhythm, depth, and temperature. This deepening awareness of the breath can lead to a deeper understanding of the mind-body connection and the interconnectedness of all things.

Furthermore, the breath serves as a mirror for the mind. Just as the breath flows in and out naturally, so do our thoughts and emotions. By observing the breath, the meditator can gain insight into the impermanent and ever-changing nature of the mind.

In shikantaza meditation, there is no goal or desired outcome. The focus is simply on being fully present with the breath, without any judgment or attachment. As the meditator continues to practice, they may experience a sense of calmness and clarity, as well as an increased ability to be present in their daily lives.

In summary, the role of breath in shikantaza meditation is to serve as a focal point, allowing the meditator to cultivate mindfulness and presence in the present moment. By observing the breath, the meditator can deepen their understanding of the mind-body connection and gain insight into the impermanent nature of the mind.