“Miguel Indurain, five-time winner of the Tour de France, reported a resting heart rate of only 28 bpm. The reason for this is that, with appropriate training, the heart muscle increases in both size and strength.” — Roy Benson Copy Share Image
“Miguel Indurain, five-time winner of the Tour de France, reported a resting heart rate of only 28 bpm. The reason for this is that,… — Roy Benson Copy Share Image
