Today
the average duration of human life in the United States 
is
just about 70 years for women and a little less for men.  
Conservative
experts believe that man is really build to last 
about
100 years; and that medial advances and more healthful 
living
habits could bring this about within a generation or two.
What
good is it to add years to life if we do not also add life 
to
years?  In fact, unless people learn to
enjoy life and to 
grow
old gracefully, the extra years may be an additional burden.
From
18 to 30 years is roughly the period of highest physical 
and
mental vigor.  The experiences we
accumulate from the day we 
are
born help us to conserve and to use our physical and mental 
abilities
more wisely, so that for some time after 30 years we 
are
able to perform increasingly well in spite of slowly slipping 
vigor.  After age 50 the increasing accumulation of
experience is 
no
longer able to offset the now more rapidly energy and therefore 
aging
begins to assert itself noticeably and in many ways.
A
number of things may come about gradually such as people who have 
not
used eyeglasses before may at some time in their forties need 
them
for reading, and in the fifties they usually need bifocals.
Also
in the forties, people are likely to put on weight because 
there
is a general slowdown in the oxidation rate of the aging body 
tissue.  Also we tend to do less strenuous work with
no reduction 
in
the amount of food consumed.
And
in the fifties there is likely to be some loss of hearing.  
Usually
the high-pitched tomes go first, so words with the sounds 
of
F, S, and TH are confused.  A hearing aid
may be needed in 
some
cases.
Aging
is generally accompanied by a loss in physical and mental 
flexibility.  This is noticed in a tendency to become stiff
in the 
joints;
in slower comeback after a strenuous trip, excessive "night 
life,"
or hard work; in slower healing of wounds, sore muscles, 
and
sprains; in slower recovery of pep after an illness; and in 
greater
difficulty to adjust to new people, new places, and new 
ideas.
Men,
especially, will notice loss of muscular strength.  There will 
be
increased unsteadiness and delicate muscle movements will be more 
clumsy
and the stride in waking will become shorter. 
The conclusion 
now
is that the performance and ability of the elderly has long been 
underestimated
and can be greatly improved by a proper diet, sleep 
and
exercise along with rest and relaxation.
Many
elderly people tend to lose their joy and will to live and 
chronic
worriers may mope around and withdraw. 
Medical authorities 
now
say that laughter is one of the best medicines for the elderly.  
You
can always keep your sense of humor tuned up by surrounding 
yourself
with pleasant and interesting people. 
Just act your age 
and
don't be afraid to laugh at yourself even when no else is around.
Now
that we all know the role that physical activity plays in our 
lives,
remember to do something physical every day. 
The joints must 
be
used or quite simply they will tighten with age creating that 
stooped
worn out appearance we so often associate with getting old.  
Keep
yourself flexible and fit on an exercise program consistent with 
your
ability.                                                                                            
 
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