Running is a great exercise for overall health and fitness, but you should consult with your doctor before starting a running program. In particular, if you are over 50 years old, overweight, or have a chronic illness, pre-exercise screening may be recommended to help determine if the benefits of running outweigh the risks. There are many safe running routes that you can gradually work your way up to. A good way to start is by starting out with brisk walking and gradually increasing the amount of jogging time each session. Make sure to warm up and stretch before running.