Monday morning, three weeks ago, I went to my primary doctor for help with shortness of breath. With concern writ large on her kind face, she said, “I think you should go to the ER.” As an avid daily walker with a two-plus-mile habit, I was startled and reluctant. She suggested we make four loops around the hallway to double-check my breathing. By loop three, I was short of breath and sold, albeit reluctantly, on the ride in an ambulance, my first ever, to a nearby hospital.