To raise a healthy boy, you need to know or understand the laws of age-related physiology, that is, when and in what quantity to give the child’s growing body exercises so that he grows correctly, in accordance with his anthropometry. If a child simply grows like nettles in a garden, and the parents do not monitor his physical development (up to 6-8 years), that is, there is a high probability that the young man will be rejected for military service, and there is also a high probability that he will be infertile. It is impossible to make up for what was missed in early childhood in a later period of life (after puberty). Physiologists call this phenomenon retardation. Adult men would do well to read the author’s original concept about prostatitis and hemorrhoids. Practice has proven its feasibility. The publishing layout is saved in PDF A4 format.