The appearance of secondary sexual characteristics in boys mostly occurs at the age of 10 to 14, with individual boys a little later.
The main signs of the appearance of secondary sexual characteristics in boys are, first of all, the increase in the size of the testicles, the glans and penis enlargement and thickening, at the same time, the child’s hair becomes thicker, the pores increase in size, and the beard can be seen to grow, and the pubic hair and armpit hair also appear to develop during this period. Secondly, the boy’s laryngeal knots protrude, and his voice changes from a babyish one to a low one.
The emergence of secondary sexual characteristics in boys is also characterized by rapid growth in height and weight. Therefore, at the time of the appearance of secondary sexual characteristics, i.e., at the age of 10 to 14 years old, you need to give your child more high-quality proteins such as eggs, as well as calcium, phosphorus, vitamin D and other nutrients, to ensure that adequate sleep, and develop a good work routine.
In short, most boys secondary sexual characteristics appear in puberty, 10 ~ 14 years old are normal.