We look at the first three sentences of the chorus of Satipaṭṭhāna Sutta, where the Buddha explains the arising of insight (vipassanā). We examine “tracking body as body internally and externally,” where the assumed boundary between self and other begins to dissolve. Then we look at how the practitioner opens into the perception of impermanence – “tracking the nature of arising and ceasing as body.” Finally, we examine the entry into emptiness, where the practitioner is mindful that “body is,” for understanding (ñāṇa) and continuous mindfulness (paṭisati).