Exercise 4 in the Discourse on the Four Foundations for Awareness: "In this body are head hairs, body hairs, nails, teeth, skin, flesh, tendons, bones, bone marrow, kidneys, heart, liver, diaphragm, spleen, lungs, large intestines, small intestines, contents of the stomach, feces, bile, phlegm, pus,blood, sweat, fat, tears, oil, saliva, snot, joint fluid, and urine"