But on Monday, the day after we ran the Kalundborg Winter
Marathon, I found myself unable to think straight. Patients and
colleagues alike would ask me questions or give me information
and I would stare at them as if they were a teacher from Charlie
Brown. Normally I would attribute behaviour like this to low
blood sugar or lack of sleep. But I am certain neither of these
were the case. And my boss said I looked ill and that she was
concened about me. Despite being a physician, I find myself
unable to explain these untoward effects other than attributing
it all to "exhaustion". Here I am looking kind of dead after the
race: To determine whether or not a marathon is "healthy", one
should probably consider the immediate, secondary and long-term
effects it has on the body. 1. Short-term health effects: It is
hard to find many short-term health benefits. There is of course
that rush of adrenaline and another benefit for most people is
burning calories. Negative effects on health include
muskuloskeletal injuries,