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A 2013 report through national statistics of students of the last grade before high school, aged generally (86%) 13–15, found out 28.7% of them already had lost their virginity, with both demographics of 40.1% of boys and 18.3% of girls having reduced their rate since the last research, in 2009, that found the results as 30.5% overall, 43.7% ...
Virgin boys were more likely than girls to say that they believed most students did not have sex. [26] Boys who caused a pregnancy in the past were more than twice as likely to become abstinent after that episode than other boys. However, for girls, a past pregnancy had little correlation with secondary abstinence. [26]
Upper body of a teenage boy. The structure has changed to resemble an adult form. Puberty is a period of several years in which rapid physical growth and psychological changes occur, culminating in sexual maturity. The average age of onset of puberty is 10–11 for girls and 11–12 for boys.
During this period, puberty began occurring at younger ages, so a new focus on adolescence as a time of sexual confusion and danger emerged. There was a new focus on the purpose of marriage; it was increasing regarded as being for love rather than only for economics and reproduction.
During this time, children, especially girls, show increased awareness of social norms regarding sex, nudity, and privacy. [17] Children may use sexual terms to test adult reaction. [10] "Bathroom humor" (jokes and conversation relating to excretory functions), present in earlier stages, continues. [18]
During puberty, a male's erect penis becomes capable of ejaculating semen and impregnating a female. [26] [27] A male's first ejaculation is an important milestone in his development. [28] On average, a male's first ejaculation occurs at age 13. [29] Ejaculation sometimes occurs during sleep; this phenomenon is known as a nocturnal emission. [25]
In Part Three, "Puberty", Harris touches on the transition of female and male bodies and feelings during puberty. [12] Harris explains the purpose of puberty as well as sharing information of what to expect and how to take care of the body. [12] In this part, she introduces masturbation as a result from sex hormones. [12]
A similar book aimed at boys between the ages of nine and twelve, Guy Stuff: The Body Book for Boys, was written by Natterson. It discusses the physical, social and emotional changes that boys may experience during puberty, as well as general hygiene and health issues commonly encountered during adolescence. [15] [16]