Regular exercise induces several physiological changes in the body, including improved cardiovascular fitness, increased muscle strength, and enhanced metabolic rate. It stimulates adaptations in the heart and lungs, increasing efficiency of oxygen delivery to tissues. Additionally, exercise promotes healthy bone density and muscular endurance. Hormonal changes, such as increased production of growth hormone and endorphins, enhance mood and aid recovery. Over time, these adaptations contribute to overall health, improved function, and a reduced risk of chronic diseases, emphasizing the importance of a consistent exercise regimen.