The first is impermanence. Feel your nerves spark with micro-sensations, and note that these always pass. Second, witness the driving force of suffering. See how you shift positions to counter an ache in your tailbone or stretch to ease a cramp.

Third and last, see how mindfulness of the body reveals the absence of the self. You are skin, bone, sinew, organs, bile, snot, and tears. You are an interdependent system of things. There is no bigger you behind it. In this context, “you” – as the entity directing the system – are a fiction.