August Krogh is an outstanding scientist, winner of the Nobel Prize in Physiology or Medicine. His main research is devoted to the problems of respiration and capillary circulation.The remarkable Russian doctor and scientist A. Zalmanov, influenced by the work of A. Krogh, became interested in studying the physiology of capillaries and was invited by the latter to Copenhagen for joint work. They investigated turpentine emulsions and their effects on the body as a whole. The result was August Krogh receiving the Nobel Prize "for the discovery of the mechanism of regulation of the lumen of the capillaries."August Krogh proved that the human body has a huge potential and the ability to self-regulate and heal itself in various "breakdowns".