How Lack of Exercise Shortens Lives
Two important articles show that people die from
inactivity, not just from aging. We know that as people age,
they lose muscle, their immunities weaken and because of their
weakened immunity, they are more likely to die of cancer and
infectious diseases. As you age, you lose your ability to kill
germs because of lack of muscle. When germs get into your
body, you must make white blood cells and proteins called
antibodies to kill them. Antibodies and cells are made from
protein and the only place that you can store extra protein is in
your muscles. When you have large muscles, you have a ready
source of protein to make antibodies and cells. When you have
small muscles, you have a very limited source of amino acids to
make protein, so your immunity may be inadequate to kill germs.
You need antibodies to control cancer cells also. Each
day, every healthy body makes millions of cancer cells. Your
white blood cells and protein antibodies are necessary to ferret
out and kill these cancer cells. You develop cancer when these
cancer cells survive and start growing. Having large muscles
gives you the source of protein to make antibodies that kill
cancer cells as well as germs.
Furthermore, when your skeletal muscles are small, so is
your heart muscle. A strong heart can withstand arteriosclerosis
and infections that can kill a person with a weak heart.
A study in the Journal of the American Medical
Association showed that aging does not cause loss of muscle
(January 12, 2001); lack of exercise causes muscles to get
smaller. With aging, it takes increasingly longer to recover from
exercise, so people get tired sooner, feel sore earlier, or get
more frequent injuries. Then they exercise less and less or stop
exercising altogether. You need to develop an intelligent
exercise program so this does not happen to you. If you can
exercise into your nineties without quitting or getting injured, you
can retain muscle mass, keep up your immunity and live a longer
and healthier life.
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