Regular physical activity (FA)/exercise practices are one of the most important activities you can do for your health. This work; Why should we do FA and/or exercise, the risks of sedentary behavior, FA and/or exercise frequency, FA and/or exercise recommendations aim to create more active people. The human aging process is universal, ubiquitous, and inevitable. Every physiological function is constantly decreasing. Aging and a sedentary lifestyle are associated with declines in muscle function and cardiorespiratory fitness, resulting in impaired capacity to perform daily activities and maintain independent functioning. However, in the presence of adequate exercise/FA, these changes in muscle and aerobic capacity decrease significantly with age. Additionally, both structured exercise and overall FA play important roles as preventative strategies for many chronic diseases, including cardiovascular disease, stroke, diabetes, osteoporosis, and obesity. More importantly, exercise practices are often aimed at several physiological systems simultaneously, rather than targeting a single outcome, as is the case with pharmacological approaches to disease management. As a result; Exercise practices are important in terms of their effectiveness in mitigating the physiological changes of aging, preventing diseases and/or improving older adults with chronic diseases and disabilities.