After achieving proficiency in seated meditation and contemplation, one should practice maintaining mental stillness during activities while continuing to observe the breath. When seated meditation becomes tranquil and contemplation is deeply focused, gradually rise from sitting and practice walking meditation on the ground—walking or strolling, whether fast or slow. Observe whether your mind can still remain anchored to your breathing at this time, undisturbed by surrounding sensory phenomena. If you remain undisturbed, it indicates strong concentration in breath observation. Then you may practice maintaining focused breath observation at all times. If you can still observe the breath during activities, it signifies exceptionally strong concentration—even stronger than during seated meditation. At this stage, the skill of breath observation becomes profoundly deep, and the practice integrates seamlessly across walking, standing, sitting, and reclining.
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