Running contains all the beneficial characteristics of a complete body workout. There are many different types of muscle groups that are utilized during a simple run. This takes place as during a run, the entire body is often used for extended periods of time. Running can be done almost anywhere and is also the perfect means through which one can burn calories. Leg muscles are fully utilized during running and therefore improve the tone and strength of the glutes, calves and even those tough-to get-to thighs. Many athletes often resort to running for improving their overall levels of stamina. Treadmills and circuits can be used for a more controlled exercise-regime as they produce less strain on the knees in comparison to the urban outdoor areas. Running can be done by literally anyone and is a recommended starting point for anyone eager to improve their level of fitness. treadmill