From the Blue Jackets Manual - 1940 US Navy
Chapter 28
Personal Hygiene
General
…..Personal hygiene teaches us to keep both our minds and bodies healthy. It is easy for the mind to form a habit , even as other habits are formed. By keeping the mind occupied in the work assigned to you , by taking an interest in professional studies, by athletics and clean recreation, and by reading good books, you can develop your mind in a healthy manner. Smoking to excess, drinking intoxicating liquor, and associating with bad women can ruin you bodily health. Bad women are especially the cause of much grief, as promiscuous intercourse with them frequently results in loathsome diseases which not only often leave their effects on your system for the rest of your life, but also may be transferred by you to your future family with disastrous results. Sexual intercourse is positively not necessary for health and proper manly development.