Almost half of all patients who suffered some sort of heart failure slip into depression, even though some of them live another few decades after the event. But exercise really is a miracle worker – according to doctors, even in such a delicate case, it can significantly help patients overcome their depression.

Researchers randomly assigned more than 2,300 heart failure patients in the United States to receive either education and the regular training, or just supervised aerobic exercise, 90 minutes a week for the first three months, and 120 minutes of at home training for the next nine months. Patients who were most active in the exercise group had the greatest reduction, but the average absolute reduction was pretty small.

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