The initial signs of puberty may start to appear among girls between the ages of nine and ten, and menstruation is considered the primary sign of puberty in females approximately two years following the appearance of secondary sexual characteristics.

As for males, changes begin to appear between the ages of twelve and fourteen during which the appearance and emergence of secondary sexual signs occurs, and wet dreams are the main sign of puberty in males. Puberty is preceded by rapid physical growth, especially in height. This rapid growth is not a result of puberty, but rather a precursor to it. Overall, there are a number of factors that affect the date of reaching puberty such as the state of glandular activity, health status, individual readiness, and some other factors such as nutrition. The following table shows the differences in signs of maturity in both males and females.