For all sorts of people in hundreds of countries, running has become more than a survival strategy. It has turned into a kind of cardiovascular workout. Running is a workout that most visibly strengthens the legs, but your whole body gains thanks to running. You heart and lungs circulate fluid and air at higher capacities, increasing your lung capacity and lowering your blood pressure as the miles go by. You swing your arms and torso, enhancing muscular strength. You sweat which also cleans your pores. Your digestive system jump starts itself to provide extra energy from stored sources, which helps you work off fat. There are so many advantages to running for fitness. A great unit to look into is the Timex Ironman T5F011 Bodylink GPS Watch.