Jogging is a form of trotting or running at a slow or leisurely pace. The main intention is to increase physical fitness with less stress on the body than from faster running but more than walking, or to maintain a steady speed for longer periods of time. Performed over long distances, it is a form of aerobic endurance training.
Women jogging along Morro Strand State Beach, California, U.S.
Jogging track in Hong Kong
A detail of an ancient mosaic depicting a young woman who jogs with dumbbells, fourth century AD
Säpojoggen jogging event in Sweden
Running is a method of terrestrial locomotion by which humans and other animals move rapidly on foot. Running is a gait with an aerial phase in which all feet are above the ground. This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight, and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride co-occur, with energy storage accomplished by springy tendons and passive muscle elasticity. The term "running" can refer to a variety of speeds ranging from jogging to sprinting.
Marathon runners at Carlsbad Marathon, US, 2013
Ancient Roman bronze sculptures of runners from the Villa of the Papyri at Herculaneum, now in the Naples National Archaeological Museum
Eadweard Muybridge photo sequence
A U.S. Army soldier wearing sportswear runs to maintain his fitness.