The body is an important object of craving; and the resulting attachment is a tenacious defilement. Suffering is the consequence. To overcome it, focus your attention on the decay and disintegration of the human body so that the mind becomes clearly disgusted with the human condition, thoroughly weary of the true nature of human embodiment. As repulsion to the physical grows stronger, lightness and brightness of mind become more prominent. The human body is a heap of flesh and blood two feet wide and six feet long that is changing every moment. Seeing the suffering caused by our attachment to the body is the initial insight that focuses our minds on Dhamma. Those who see the body clearly tend to understand Dhamma quickly.
This reflection by Mae Chee Kaew is from the book, Mae Chee Kaew, pp. 237-238.