Many health professionals will tell you that running is bad for you. Besides the injuries associated with running, there are a lot of benefits to running. It is one of the best things for mental stability, the endocrine system (the system of glands that produce endocrine secretions that help to control bodily metabolic activity), and body weight, among other things. So how can something so good be so bad? The answer is running is not bad but running incorrectly is.