Network physiology is a research field that investigates the complex, dynamic interactions and coordination among diverse physiological systems across multiple scales of organization. It employs principles from complex systems science and network theory to analyze interdependencies, synchronization phenomena, and emergent properties arising from the integrated functioning of these systems. The significance of this field lies in providing a holistic understanding of physiological regulation, health, and disease by considering the organism as an integrated network rather than a collection of isolated components.