Kitap 1
2
2 The weak, however, among whom are a large portion of townspeople, and almost all those fond of letters, need greater precaution, so that care may re-establish what the character of their constitution or of their residence or of their study detracts. Anyone therefore of these who has digested well may with safety rise early; if too little, he must stay in bed, or if he has been obliged to get up early, must go to sleep again; he who has not digested, should lie up altogether, and neither work nor take exercise nor attend to business. He who without heartburn eructates undigested food should drink cold water at intervals and none the less exercise self-control.
2
He should also reside in a house that is light, airy in summer, sunny in winter; avoid the midday sun, the morning and evening chill, also exhalations from rivers and marshes; and he should not often expose himself when the sky is cloudy to a sun that breaks through . . ., lest he should be affected alternately by cold and heat — a thing which excites particularly choked nostrils and running colds. Much more indeed are these things to be watched in unhealthy localities, where they even produce pestilence.
