What is "mall walking"

n. (context US English) Walking in a mall as a form of exercise.

Mall walking is a form of exercise in which people walk or jog through the usually long corridors of shopping malls. Many malls open early so that people may mall walk, however stores and other such facilities generally do not open at this time, though vending machine concessions are available. Many choose to mall walk as the indoor climate is comfortable and there is easy access to amenities, such as benches, toilets, and water fountains. Clean and level surfaces also provide a safe walking environment.

Mall walking is undertaken individually, in groups, or as part of an organized mall walking program. Mall walking in the United States is especially popular amongst senior citizens. Many mall walkers cite the camaraderie of walking in groups.