I fall into the category of the “uninsurable.” It doesn’t matter that I wake up most mornings to swim 160 laps, am borderline obsessed with eating salads and whole grains, and that I haven’t drank a drop of alcohol in 24 years; that I do yoga twice a week, keep a mood journal, engage in...

I’ve always known that I climb out of any pool a lot happier than when I dove in. Yes, I know any kind of aerobic exercise relieves depression. For starters, it stimulates brain chemicals that foster the growth of nerve cells; exercise also affects neurotransmitters such as serotonin that influence mood and produces ANP, a...