A healthy heart functions like an efficient biological pump: it delivers blood according to the body’s needs while maintaining a stable rhythm and balanced pressure. At rest it operates economically; with exertion it increases output by beating faster and stronger—this adaptability reflects cardiovascular resilience. Healthy vessels have flexible endothelial lining, supporting smoother flow and more controlled pressure changes. Heart health is also tracked through measurable markers: blood pressure within target range, favorable lipid profile, steady rhythm, good exercise tolerance, and a healthy body weight or composition. In daily life, the absence of disproportionate shortness of breath, exertional chest pain, or unexplained fatigue is generally reassuring, but objective monitoring remains the gold standard. A healthy heart is the outcome of well-designed routines: movement, nutrition, sleep, stress management, and preventive care working as a system.