--A Boston merchant in "lending a hand" on board of one of his ships on a windy day, found himself, at the end of an hour and a half, pretty well exhausted and perspiring freely.
He sat down to rest.
The cool wind from the sea was delightful, and, engaging in conversation, time passed faster than he was aware of. In attempting to rise he found he was unable to do so without assistance.
He was taken home and put to bed, where he remained two years; and for a long time afterward could only hobble about with the aid of a crutch.
Less exposure than this has, in constitutions not so vigorous, resulted in inflammation of the lungs, >"pneumonia," ending in death in less than a week, or causing tedious rheumatism, to be a source of torture for lifetime.
Multitudes of lives would be saved every year, and an incalculable amount of human suffering would be prevented, if parents would begin to explain to their children, at the age of three or four years, the danger which attends cooling off too quickly after exercise, and the importance of not standing still after exercise, or work or play, or of remaining exposed to a wind, or of sitting at an open window or door, or of pulling off any garment, even the hat or bonnet, while in a heat.
It should be remembered by all that a cold never comes without a cause, and that in four times out of five it is the result of leaving off exercise too suddenly, or of remaining still in the wind, or in a cooler atmosphere than that in which the exercise has been taken.
The colder the weather the more need is there, in coming into the house, to keep on all the clothing except Indian rubber or damp shoes, for several minutes.
Very few rooms are heated higher than 65 degrees when the thermometer is within 20 degrees of zero, while the temperature of the body is always at 98 in health, so that if a man comes in a room which is thirty degrees colder than his body, he will rapidly cool off, too much so often, even if the external clothing is not removed.
It is not necessary that the perspiration be visible; any exercise which excites the circulation beyond what is natural, causes a proportional increase of perspiration, the sudden checking of which induces dangerous diseases and certain death every day.