A chill is sufficient to arrest the flow. The mammæ (the breasts) enlarge, the ovaries dilate, and a periodical uteral discharge (menstruation) is established.Menstruation
No young girl should feel alarmed if, owing to the negligence of her parents or guardians to prepare her, she is surprised by this first flow from the genital organs. Indian sex Parents who do not control the social activities of their daughters, who permit them to spend their evenings away from home with only a general idea of what they are doing or whom they are meeting, need not be surprised if their morals are undermined. Also, she should avoid all unnecessary fatigue, exposure to wet or to extremes of temperature. These characteristics are believed to be produced by a positive feedback loop known as the Fisherian runaway produced by the secondary characteristic in one sex and the desire for that characteristic in the other sex. These characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a species, but–unlike the sex organs (primary sex characteristics)–are not directly part of the reproductive system. Adxxxxxxxe is usually associated with the teenage years but its physical, psychological or cultural expressions may begin earlier and end later.