Physical activity is defined as any bodily movement produced by skeletal muscles that requires energy expenditure. This includes all movements during leisure time, transport, work, or domestic activities

. It encompasses a wide range of activities such as walking, cycling, sports, active recreation, household chores, and occupational tasks

. Physical activity can vary in intensity from light activities like slow walking to vigorous activities like running or fast cycling

. It is distinct from exercise, which is a subset of physical activity that is planned, structured, repetitive, and aimed specifically at improving or maintaining physical fitness

. Engaging in physical activity is beneficial for health and well-being, helping to prevent and manage noncommunicable diseases such as heart disease, diabetes, stroke, and certain cancers. It also supports mental health, quality of life, and healthy body weight maintenance

. In summary, physical activity is any movement produced by muscles that uses energy, ranging from everyday tasks to intentional exercise, and is crucial for maintaining overall health.