A due degree of exercise is indispensably necessary to health and long life. The open air, when the weather is fair, contributes much to the benefit of exercise. We may strengthen any weak part of the body by constant exercise. They should frequently shave, and frequently wash their feet. The fewer clothes any one uses, by day or night, the hardier he will be.
Cold bathing is of great advantage to health.
It prevents abundance of diseases. It promotes perspiration, helps the circulation of the blood, and prevents the danger of catching cold. Tender people should pour water upon the head before they go in, and walk swiftly. To jump in with the head foremost is too great a shock to nature. Obstructed perspiration is one great source of diseases.