Today's Tanya is the beginning of Parak Zion. At the end of the previous Parak, I'll forever begin to explain that within the Sittra Akra, the side that is not centered on the Will of A Shem, there are two categories. The lower level are clippas which have no redeeming godly value. For example, foods that we are forbidden to eat, as well as any act, speech, or thought that violates a Torah provision.
There is also a higher level of clippas called kippas nayga, a bright clippa, serving as an intermediate between the lower clippas and holiness. It is from this level of clippas that the animalistic, vitalizing soul of a Jew comes from. As well as foods that we are permitted to eat, or for that matter any act, speech, or thought that does not violate any Torah provision, yet are self-centered and not directed towards A Shem. Even when done purely to maintain a healthy body, nevertheless it stems from clippas.
Unless it is done consciously for a higher purpose, in which case the good within the clippa of his action is elevated from the bed and becomes holy, like a carbon. For example, if a person eats meat or drinks fine wine, to broaden his mind for Hashem and for the study of Torah, or for the sake of fulfilling the mitzvah to take pleasure and shabbas, or matters of speech, to use humor for example, to serve Hashem with joy.