lccs+Physical+Changes+In+Boys

=
Boys usually notice the physical changes in puberty around the ages of eleven to thirteen. Many people go through different stages of puberty at different times, however there a five stages of physical development that most people fall into.=====

=
Boys have always produced testosterone, however in puberty, there is an increased level of testosterone production. Testosterone is the male hormone that is responsible for puberty in males and the various changes that occur. This is increased production of testosterone usually starts at the age of nine, however the boy does not know it because there are no physical signs.=====

** The Second Stage: **
The second stage is a big one because there are many visible changes. It usually occurs from around eleven to thirteen. Due to the hormones that have already started being produced a boy will see that he has significantly grown in the last two years. He will also notice that his testicles have become larger and that his scrotum has started to hang lower. When a baby is born, the testicles are as small as marbles; however after puberty, they can be as big as golf balls. The testicles and scrotum hang lower because the testicles need a suitable temperature to produce sperm. In summer, when the body is very hot, the testicles will hang lower than usual so that they can be away from the heat. On the contrary, in winter, the testicles will shrink and draw up towards the body so that they can have the heat the body provides.

Boys will also see that his scrotum has become a lot darker in colour. This is due to the needs of sperm production. In the scrotum, there are many small blood vessels and this is the reason for the colour and not skin colouration. During the second stage, a boy will also grow a lot more body hair in several regions. These include:
 * Arm and Leg Hair:** the hair on the legs will considerably become longer and course. When a boy is young, his arm and leg hair is very fine and is often blonde. However in puberty, the hair will become darker, longer and rougher.
 * Pubic Hair:** Pubic hair is rough hair that grows around and above the base of the penis. When a young boy first starts getting pubic hair, it is very thin. But later in development, as you can see in the diagram below, there is a lot more pubic hair and it is also very coarse.


 * Underarm Hair:** In the Second Stage, many teenagers will get underarm hair, however most will not get it until the ages of thirteen to fourteen. Boys develop underarm hair because of a useless reason, but it wasn't always pointless. Many years ago when man was still developing and we lived in caves, underarm hair was a sign that the male was sexually mature for reproduction. When females would choose a partner to mate, one of the signs they would look for it whether he had underarm hair or not. Although nowadays, females choose their partners for other reasons.

=
The Third Stage usually starts at around twelve to fourteen years. Penis and testicle growth continues and pubic hair spreads and becomes darker, thicker and curlier. In the Third Stage, a male's muscles will also become significantly larger. His shoulders will broaden and he will become much taller.===== It is generally in the Third Stage that a boy will have his growth spurt. A growth spurt is a significant increase in height within a short amount of time. The average prepubescent growth in a year is two inches, whereas in puberty (and the Third Stage), it can be three inches or more.

Also in the Third Stage, sperm production will begin. Sperm is the male cell that is responsible for reproduction. In reproduction, a male and female will be involved in sexual intercourse. When this is happening, the male will ejaculate. Ejaculation is the ejection of semen containing sperm from the penis. The "tadpole-like" sperm cell meets with the female's egg cell (see Physical Changes In Girls) and a baby starts to grow and develop. A man is physically able to reproduce when he starts ejaculating.

When a man ejaculates, he will experience an orgasm. An orgasm is the peak during sexual intercourse or masturbation. Masturbation is the word used to describe self stimulation of the genitals for sexual pleasure. Boys and girls will often try masturbating before the Third Stage however it is uncommon for them to ejaculate and have an orgasm before this stage. Because masturbation feels so good, young people will often think that it is too good to be true and must be wrong or "a sin". However, this is not the case. Masturbation is perfectly normal and is a part of growing up; it is not wrong unless your religion restricts you.




 * The Fourth Stage: **

The Fourth Stage is not particularly significant. The penis and testicles continue to grow, as well as pubic hair which continuously becomes thicker, darker and increases in length and amount. Height and weight growth will also continue to continue. The only "big" development that occurs in the Fourth Stage is the growth of the larynx. The larynx is also commonly referred to as the "Adam's Apple". This is because it is a small lump in the neck region and can be seen from the exterior. Although the name refers to it as a apple, it is much smaller. In the larynx there are elastic-like vocal chords that are responsible for the pitch of our voice. In the Fourth Stage, these vocal chords stretch, become longer as well as thicker. Due to the growth of these chords, the boy's voice will "crack" and eventually become a lot lower than his prepubescent voice.

This is where the phrase, "My voice is **breaking**". It refers to the cracking of the voice. This can be quite embarrassing, however all boys experience it and so no one should be worried.

​
 * The Fifth Stage: **

The Fifth Stage is the last and one of the most important. In this stage, there are many aspects to cover. It starts from anywhere from 14+. Firstly, pubic hair, underarm hair and leg hair has reached its maximum in length and thickness. Distribution of the hair has also reached adult amount. Chest hair may also start to grow during this stage depending on the parent's genes. Facial hair will also start appearing and the young man will have to start shaving. The penis and testicles have also reached their full size and the young man is definitely capable of sperm production if he wasn't by The Third Stage.

The young man has now reached his full height but may still grow until his early twenties. Overall, the young man looks like an adult in the various parts of his body including the face, genitals and the overall body shape.


 * Bibliography **
 * Answer Bag: []
 * Avert: []
 * Fathermag Magazine: []
 * 4 Parents: []
 * Organized Wisdom Health: []