The benefits of exercise are far-reaching. Clinical and
epidemiological studies have demonstrated that regular aerobic
exercise reduces the risk of death due to heart disease and stroke,
aids in reducing weight, helps prevent diabetes mellitus, strengthens
bones, and enhances immune function. The psychological benefits are
also broad, and most studies suggest a positive relationship between
physical fitness and mental achievement.
The relationship between regular aerobic exercise and cardiovascular
health and longevity is well established. Regular exercise leads to a
reduction in the risk of coronary heart disease, in which fatty
deposits (plaque) form in blood vessels supplying the muscular wall of
the heart, compromising oxygen delivery to the heart muscle. In
addition, with regular exercise the efficiency of the heart during
exercise is increased.
Many people exercise to lose weight. A calorie is a unit that measures
the energy content of foods and the energy expenditure by the body.
When the daily calorie intake from food is the same as calories
expended from exercise, weight remains the same. The number of
calories burned during exercise varies greatly with the type of
physical activity, but the key to successful weight reduction is to
exercise regularly, without increasing food intake proportionally. For
example, walking one hour per day may utilize only 300 calories of
energy per day, a small fraction of an individual's daily caloric
intake. However, over a period, if food consumption is simultaneously
reduced or remains the same, significant weight loss will result. One
sound approach to reducing calories is to...
... middle of paper ...
...ng at a rate of 1 mile per ten minutes),
it is possible to track your fitness progress; over a period of
several weeks, the same exercise will produce a lower heart rate.
Similarly, the intensity of exercise (such as the speed of jogging)
required to produce a given rise in heart rate will increase.
The most important aspect of getting in shape is to make exercise an
integral part of one's lifestyle. Exercising to stay as physically fit
and healthy as possible should be a lifelong commitment, and is
especially important to people who perform little physical work in
their day-to-day lives.
 Lemura L.M., Von Dubillard S.P., Mookerjee S. The Effects of Physical Exercise on Functional Capacity in Adults. J Sports Med Phys Fitness 2010;40:1-10.
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