Physical activity is one of the keys to good health. Making the time to get some physical activity most days is an important part of a healthy lifestyle. Along with eating a balanced diet, getting enough physical activity can help maintain a healthy weight, and it reduces the risk of comorbidities, including cardiovascular disease, fatty liver disease, diabetes and cancer. People who do any amount of moderate to vigorous physical activity gain health benefits. Everyday activities such as walking the dog and gardening contribute to your total weekly physical activity.