Dial back extreme exercising to fight off colds and flu.
Exercise can strengthen your immune system so you can more
easily fight off colds and the flu, says Michael Flynn,
professor of health and kinesiology. But, he warns, don't overdo
it. Moderate exercise, like a workout at the gym, a brisk walk,
or a jog through the neighborhood, can be very beneficial. On
the other hand, strenuous exercise can suppress the immune
system and increase vulnerability to illness, especially for the
6-hour period following the workout. Flynn recommends that
serious athletes take some time off between tough workouts. They
should be aware of the 6-hour window of vulnerability and be
sure to eat right and avoid sick people during that time.