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Exercise and the
Immune System
It won’t be long before
commercials start playing on TV encouraging people to get the flu shot. It must
be that time of year where lurking around every corner there’s a virus waiting
to make an unsuspecting candidate sniffle and sneeze for a week. While the flu
shot is a pretty good way of staying clear of colds and flues, even it can’t
guarantee that you won’t get sick. To increase your odds of avoiding the dreaded
common cold, try a dose of exercise!
Exercise has demonstrated in
study after study to exhibit a U-shaped curve with immune system functioning.
This means two things that are important for you to consider.
The first is that during the
exercise itself, immune system functioning is actually decreased below normal
levels. Because your body is busy coping with the exercise, it is spending less
energy on fighting potential and existing illnesses. This means that you should
avoid being exposed to viruses as much as possible while you are exercising.
(I.e. wipe down your equipment before and after you use it and don’t choose the
treadmill next to the guy who’s got the sniffles!) What this also means is that
if you are already sick with the flu and you still want to exercise, then use
caution and go a little lighter than you usually would.
The second great meaning to
the U-shaped curve is the real good news. Despite that immune system function
decreases during the exercise, if you are healthy, exercise benefits the immune
system by causing it to function better than normal after the exercise. Thus,
for the rest of the day after your workout, you have increased your body’s
ability to protect itself against all of those scary viruses that seem to be
lurking behind every corner!
Combine this with adequate
rest and proper nutrition and you just might spend less money on cold and flu
medications this year!
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