Why small fitness steps could lead to a longer life, according to Dr. Jeremy London Board-certified cardiothoracic surgeon Dr. Jeremy London, based in Savannah, Georgia, explains why VO2 max and muscle mass are the main indicators of longevity. NEW You can now listen to Fox News articles! After a minor stroke, there are several risk factors that can predict another event, according to new research. A study published in the journal Circulation by the American Heart Association investigated what