One of the major risk factors for health-problems like cardiovascular illness is a sedentary lifestyle. Any body movement is called physical activity, things like walking your dog, walking to work, cleaning your house, and so on. More physical activity is always better – https://www.cdc.gov/physicalactivity/basics/index.htm.
Exercise refers to a specific type of physical activity, one that is repetitive, structured, planned, and usually done for the purpose of improving health, increasing physical fitness, or looking and feeling better.
Regular physical activity and exercise reduce people’s risk for chronic health conditions like cardiovascular disease, type 2 diabetes, stroke, and several types of cancer – https://health.gov/paguidelines/second-edition/pdf/Physical_Activity_Guidelines_2nd_edition.pdf#page=55.
Key recommendations for health benefits are as follows: