Diaphragmatic breathing is often called belly breathing, but the name can make it sound as though you must push your abdomen outward or keep your chest completely still. A comfortable practice should not require force or leave you struggling for air.
Begin with ease rather than technique
If a clinician has recommended breathing practice, ask them to demonstrate a version that suits you. Sit with support or use another position they advise. Let the breath remain gentle; do not force large inhalations, prolonged exhalations, or breath holds.
Stop if you feel dizzy, breathless, distressed, or uncomfortable. If you have reflux, lying flat after eating may be unsuitable. Breathing exercises are not a treatment for unexplained abdominal pain, persistent digestive symptoms, or a new breathing problem.
Keep expectations realistic
Some people use comfortable breathing as a relaxation practice. It does not need to improve digestion, switch off pain, or produce a measurable result to be an optional part of a quiet pause. The NCCIH relaxation guidance discusses the limits of these approaches.
If attention to breathing makes you uncomfortable, choose an external focus instead, such as music or a view through the window. You are allowed to prefer a different kind of rest. A supportive routine should offer choices rather than make you feel responsible for controlling every bodily process.