Kevin Shimkus, B.S. As important as regular physical exercise is for general health and well-being, a chronic lack of activity contributes to increased chances of adverse health risks and a decreased quality of life.  Paradoxically, both of these opposing situations (as well as several others) are associated with an increased production of reactive oxygen species (ROS), commonly known as oxidants or free radicals.  ROS are produced in the body and are highly reactive molecules tha...