Microcirculation consists of arterioles, capillaries and venules. It is the only place for metabolism and material exchange.

Improving microcirculation is a very general statement. Especially in the field of health care, this statement is more common.

Don't say "microcirculation" in Chinese medicine. There is no microcirculation in TCM theory.

Most people have no problem with systemic microcirculation. Once something goes wrong, it is pathological and needs treatment.