To your good health
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 always push myself to the edge of what's a comfortable pace. My lifelong cardio exercise enthusiasm has resulted in my pulse being low. My resting pulse is 47-48 bpm, and at times, it will go even lower. Normally this is a sign of good health, but now that I'm older, I wonder if this is too much of a good thing. My blood pressure is not especially low (136/76 mm ...