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Dear Doctor: Active senior endurance athlete worries his low heart rate may be dangerous
9+ mon, 1+ week ago (416+ words) DEAR DR. ROACH: I am a 64-year-old male who is a lifelong endurance athlete. For the past 15 years, my primary activities are cycling and swimming. I work out around 10 hours a week now, so it’s nothing really excessive. But I…...