3 necessary for general hygiene according to season and geographical region, but at least once a week in a temperate climate. 14. All parts of an institution regularly used by prisoners shall be properly maintained and kept scrupulously clean at all times. Personal hygiene 15. Prisoners shall be required to keep their persons clean, and to this end they shall be provided with water and with such toilet articles as are necessary for health and cleanliness. 16. In order that prisoners may maintain a good appearance compatible with their self-respect, facilities shall be provided for the proper care of the hair and beard, and men shall be enabled to shave regularly. Clothing and bedding 17. (1) Every prisoner who is not allowed to wear his own clothing shall be provided with an outfit of clothing suitable for the climate and adequate to keep him in good health. Such clothing shall in no manner be degrading or humiliating. (2) All clothing shall be clean and kept in proper condition. Underclothing shall be changed and washed as often as necessary for the maintenance of hygiene. (3) In exceptional circumstances, whenever a prisoner is removed outside the institution for an authorized purpose, he shall be allowed to wear his own clothing or other inconspicuous clothing. 18. If prisoners are allowed to wear their own clothing, arrangements shall be made on their admission to the institution to ensure that it shall be clean and fit for use. 19. Every prisoner shall, in accordance with local or national standards, be provided with a separate bed, and with separate and sufficient bedding which shall be clean when issued, kept in good order and changed often enough to ensure its cleanliness. Food 20. (1) Every prisoner shall be provided by the administration at the usual hours with food of nutritional value adequate for health and strength, of wholesome quality and well prepared and served. (2) Drinking water shall be available to every prisoner whenever he needs it. Exercise and sport 21. (1) Every prisoner who is not employed in outdoor work shall have at least one hour of suitable exercise in the open air daily if the weather permits. (2) Young prisoners, and others of suitable age and physique, shall receive physical and recreational training during the period of exercise. To this end space, installations and equipment should be provided. Medical services 22. (1) At every institution there shall be available the services of at least one qualified medical officer who should have some knowledge of psychiatry. The medical services should be organized in close relationship to the general health administration of the community or nation. They shall include a psychiatric service for the diagnosis and, in proper cases, the treatment of states of mental abnormality.