title: The fitness fad. Part 2.
mesh_terms: D006339:Heart Rate; D006801:Humans; D008019:Life Style; D008991:Monitoring, Physiologic / Q000379:methods; D010101:Oxygen Consumption; D005082:Physical Exertion; D010809:Physical Fitness; D011187:Posture; D012420:Running; D013177:Sports