Column: Too-rigorous exercise breaks bones

Dear Dr. Donohue: I did a very foolish thing. I joined a walkingclub. I am a 63-year-old woman whose only physical activity istaking 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 havepain on the top of my foot. I had to stop walking. The paincontinued, and I saw our family doctor. He said I had a stressfracture and told me …