CBSE Class 8 English Worksheet - Reading Writing & Grammer
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HEART – THE NEED TO PROTECT IT
Plaque is the accumulation of fat, cholesterol and other substances in arteries. As the plaque continues to build up in the artery, blood flow to the heart muscles gets reduced thus reducing the supply of oxygen and nutrients to the heart. As a result, when a major artery supplying blood to the heart muscle gets blocked completely, it results in a heart attack. Heart attack causes irreparable damage to the affected portion of the heart and subsequently reduces the efficiency of the heart.
In today’s fast moving world, people have little or practically no time for any structured exercise regime. In addition to this, highly sophisticated gadgets that perform almost all the tasks with ease and little expenditure of energy are replacing physical activity earlier required to perform daily tasks. Thus, increased mechanization has contributed largely towards a sedentary lifestyle, which is responsible for an increased prevalence of heart disease.
In today’s highly competitive and stressful environment at work, people have forgotten the basic principles of ‘healthy living’ in an attempt to raise their standards of living. Stress, one of the major culprits, has taken a heavy toll on the younger generation that is more prone to heart disease than thought otherwise.
Simple lifestyle modifications can help you keep heart disease at bay. For instance, aerobic exercises tend to promote cardiovascular fitness as the heart muscles have to work harder in order to supply energy to the heart making it more efficient and better conditioned. Some examples of aerobic exercises are brisk walking, cycling, jogging, swimming, running and jumping rope.
Exercise or physical activity, one of the most neglected aspects of healthy lifestyle, offers myriad benefits to the health by lowering blood pressure, controlling weight, improving blood circulation throughout the body, increasing levels of high-density lipoproteins (the ‘good’ cholesterol) in the blood and lowering stress. In addition to benefiting the cardiovascular system, regular exercise may enhance a person’s sense of well being, increase stamina, improve muscle tone and flexibility and enhance
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