Running is one of the best and easiest exercises that you can do indoors and outdoors. It is a good way to stay healthy without the need for a lot of equipment. Basically, there are two classes of running: treadmill running and track running. Track running is more challenging than treadmill running, however. This is because with treadmill running, some motorized treadmills don’t require you to pull your body forward as your foot hits the ground on each step, thus exerting less effort. On the other hand, track running is a good way to develop the running muscles to avoid any imbalances. Whatever is your choice, at the end of the day, what matters is that you can avoid getting injuries and that you were able to get good exercise.