The book "Nonlinear Dynamics in Physiology and Medicine" offers a comprehensive examination of the application of mathematical tools for the analysis of physiological systems. It is aimed at a broad audience, including physiologists, doctors, physicists, kinesiologists, psychologists, engineers, and mathematicians interested in the complexity and nuances of rhythmic physiological processes. The authors present both theoretical and experimental perspectives, enabling a deep understanding of dynamic rhythms in physiology. The work can be used as a textbook in advanced biomathematics courses or as a research resource to investigate specific problems and develop new research approaches. The variety of topics covered and the interdisciplinary approach make this book a valuable resource for researchers and students.