01. Being mindful of the body as a frame of reference. Kayanupassana satipatthana.
This is a conglomeration of the four properties of earth, water, fire, and wind and involves the practice of mindfulness of anatomical parts is described in the Satipaṭṭhāna Sutta, one examines this same body up from the soles of the feet and down from the top of the hair, enclosed by skin and full of many kinds of impurity. The a list of various body parts, including hair, skin, teeth, numerous organs as well as different kinds of bodily liquids are contained with the thirty two body parts (see below). This meditation, which is often called the meditation on "asubha" (the unattractive), is supposed to deconstruct notions of bodily beauty and to allow us to see that bodies are "not worth being attached to.
02. Being mindful of feelings as a frame of reference. Vedananupassana satipatthana.
The experiencing of such sensations as pleasure, pain, and neither pleasure nor pain
03. Being mindful of the mind as a frame of reference. Cittanupassana satipatthana.
Analysis of the mind which is what stores up the various forms of good and evil.
In all early sources, the contemplation of the mind or cognition (citta) begins with noticing the presence or absence of the three unwholesome roots (lust, anger, and delusion).
04. Being mindful of mental qualities or phenomena as a frame of reference. Dhammanupassana satipatthana.
Analysis of the conditions maintained within you, such as the skillful and not skillful qualities that occur mixed together in the mind.