Men in the highest quintile of fitness as measured in metabolic equivalents (METs) at age 50 had a significantly decreased risk for subsequently developing chronic conditions such as congestive heart failure, stroke, and diabetes, with a hazard ratio (HR) of 0.95 (95% CI 0.94 to 0.96, P<0.001) per MET, according to Jarett D. Berry, MD, of the University of Texas Southwestern Medical Center in Dall