Some gardens are created in people's backyards, outside their home (note that in Britain the whole area is called a "garden", not a "yard"). People with gardens in their backyards use gardens as a place to do gardening. Gardening is a type of physical activity which can use enough energy and increase your heart rate that it can be rated as a form of exercise for to relax and exercise certain muscles depending on whether on the activity you do that day such as planting, pruning, weeding, or simply just walk around your garden continuously for 15 minutes or more. 