Dr. Paul Donohue: Overly rigorous exercise breaks bones

Dear Dr. Donohue: I did a very foolish thing. I joined a walking club. I am a 63-year-old woman whose only physical activity is taking care of our home. I thought I should be doing more exercise, so I joined the club. On my fifth walking day, I started to have pain on the top of my foot. I had to stop walking. The pain continued, and I saw our family doctor. He said I had a stress fracture and …