1 NORTHUMBRIA-A mailing list for the counties of Northumberland and Durham, England. 2  DUR-NBL Mailing List-A list for individuals interested in genealogy and history of Durham and Northumberland Counties.
Physical activity is any body movement that works your muscles and requires more energy than resting. Walking, running, dancing, swimming, yoga, and gardening are a few examples of physical activity. According to the Department of Health and Human Services' 2008 Physical Activity Guidelines for Americans, physical activity generally refers to movement that enhances health.
Exercise is physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body. Exercise is used to improve health, maintain fitness and is important as a means of physical rehabilitation.tymology: L, exercere, to exercise. 1 n, the performance of any physical activity for the purpose of conditioning the body, improving health, or maintaining fitness or as a means of therapy for correcting a deformity or restoring the organs and body functions to a state of health.