Running and jogging are the most popular aerobic exercises. Both activities burn a lot of calories in a very short period of time. However, there are some downsides including risk of injury due to the high impact experienced by the weight bearing joints of the body with every step. If you enjoy running, purchase a good pair of shoes, warm up well before adding intensity. Also be mindful of the surface you run on. Cinder or dirt track is better than pavement. If you choose to run on a treadmill you can control the constant speed and impact surface. I recommend that if you enjoy running/jogging that you alternate this high impact activity with a low impact days to minimize long term joint injuries.