It would be the less becoming then for me to omit all mention of the remedies which depend upon the human will. Total abstinence from food or drink, or from wine only, from flesh, or from the use of the bath, in cases where the health requires any of these expedients, is looked upon as one of the most effectual modes of treating diseases. To this class of remedies must be added bodily exercise, exertion of the voice,[2185] anointings, and frictions according to a prescribed method: for powerful friction, it should be remembered, has a binding effect upon the body, while gentle friction, on the other hand, acts as a laxative; so too, repeated friction reduces the body, while used in moderation it has a tendency to make flesh. But the most beneficial practice of all is to take walking or carriage[2186] exercise; this last being performed in various ways. Exercise on horseback is extremely good for affections of the stomach and hips, a voyage for phthisis,[2187] and a change of locality[2188] for diseases of long standing. So, too, a cure may sometimes be effected by sleep, by a recumbent position in bed, or by the use of emetics in moderation. To lie upon the back is beneficial to the sight, to lie with the face downwards is good for a cough, and to lie on the side is recommended for patients suffering from catarrh. According to Aristotle and Fabianus, it is towards spring and autumn that we are most apt to dream; and they tell us that persons are most liable to do so when lying on the back, but never when lying with the face downwards. Theophrastus assures us that the digestion is accelerated by lying on the right side; while, on the other hand, it is retarded by lying with the face upwards. The most powerful, however, of all remedies, and one which is always at a person’s own command, is the sun: violent friction, too, is useful by the agency of linen towels and body-scrapers.[2189] To pour warm water on the head before taking the vapour-bath, and cold water after it, is looked upon as a most beneficial practice; so, too, is the habit of taking cold water before food, of drinking it every now and then while eating, of taking it just before going to sleep, and, if practicable, of waking every now and then, and taking a draught. It is worthy also of remark, that there is no living creature but man[2190] that is fond of hot drinks, a proof that they are contrary to nature. It has been ascertained by experiment, that it is a good plan to rinse the mouth with undiluted wine, before going to sleep, for the purpose of sweetening the breath; to rinse the mouth with cold water an odd number of times every morning, as a preservative against tooth-ache; and to wash the eyes with oxycrate, as a preventive of ophthalmia. It has been remarked also, that the general health is improved by a varying regimen, subject to no fixed rules.