How Much Sleep is essential? Age and timings of sleep

HOW MUCH SLEEP?

 Sleep is essential, but the amount required varies. The usual sleeping time for the adult is eight hours, but some people need less, some need more. Everyone has heard the story of Thomas A. Edison sleeping only two hours a night-and the romantic picture of Edison working on through the night to invent the electric light bulb suggests that any of us, strong willed enough, could cut down on sleep and have more time to become famous and rich. The fact is that Edison, though protesting that sleep was a loss of time and opportunity, was concerned about getting his own quota of sleep, according to his own diaries.

He napped often, and frequently drifted back to sleep for another hour or so after waking in the morning. Some physicians are firmly convinced that if shortchanging yourself on sleep does not catch up with you quickly, it will, and there will come the day when you suddenly appear to lose your energy, become prone to ailments, and suffer a general deterioration of health. There is no simple answer to the question of how much sleep is best. The essential test is whether you feel rested in the morning and have enough energy to carry on the day's activities.

Eight hours, as we have noted, is an average figure. If you do very heavy physical work or extremely exacting mental work, you may need more. Children need more sleep than adults since they are growing fast and are very active. Old people often have been thought to need less sleep; this is not necessarily true. They may need more, depending upon their activity and health. It could be a most worthwhile exercise to make your own investigation into your sleep needs, on the simple basis of experimenting to determine how much sleep makes you feel good, how much less makes you feel out of sorts, irritable, fatigued. 

STETHOSCOPE EXAMINATION FOR HEART PROBLEMS AND TO AVOID HEART ATTACK

STETHOSCOPE EXAMINATION

The stethoscope has a small cone which concentrates and slightly amplifies internal body sounds while excluding external noise. One of its major uses is in the detection of heart problems. The heart produces two distinct sounds-e-Iubb-dup, lubb-dup, lubb- dup-which are related to the closing of the valves inside the heart. The rate, rhythm, pitch, and intensity of these sounds, which can be studied with the stethoscope, provide indications of the health of the heart. The stethoscope can pick up any abnormal sounds-for example, a rubbing scratchy noise which may indicate pericardia, an inflammationof the outer coating of the heart.

With it, too, the physician can detect murmurs-audible vibrations produced by blood flow-and can distinguish among various types of them. There are murmurs associated with different kinds of congenital heart defects. Others are produced by over activity of the thyroid gland and disappear when the gland condition is corrected. A fever or anemia may produce a heart murmur which disappears when the anemia or fever is over- come. In addition-and worth special note here-there are innocent murmurs. Unfortunately, many people worry needlessly after being told at some point, perhaps during an insurance examination, that they have a murmur even though reassured it is "innocent." The fact is that innocent murmurs are unrelated to any physical problem and are quite common.

They can be found in as many as 15 percent of normal healthy adults and in an even higher percentage of normal healthy children. Such murmurs are more readily detectable in children because they have thinner chestwalls. And some authorities are convinced that if there were sensitive enough instruments, slight and innocent murmurs could be found in all people. Your physician has been trained to understand the significance of various types ofmurmurs, to distinguish carefully among them, and to heed those which tell him of existing or possibly brewing trouble.

Let him examine you and if he finds a murmur tell you exactly what it means. If he can report that it is innocent and no reason for worry that is exactly what he means. In addition to its value in studying the heart, the stethoscope often is useful in revealing characteristic sounds of asthma and of the lung disorder emphysema. Applied to the abdomen, it is often helpful in gastrointestinal problems; it may, for example, aid in diagnosis of intestinal obstruction. With the stethoscope, too, it is sometimes possible to detect blood vessel problems-the existence and location of an obstruction in an artery, for example.