spwm+Physical+Changes

**__Testicular size, function, and fertility:__ In Boys, testicular size increase is the first manifestation of puberty.Testicular size continues to increase throughout the puberty period. About a year after the testicles have started to grow the shaft of the penis starts to increase size and the penis glands will grow into adult proportion. The average age of when your penis starts to increase is 13-14 years.
 * __​__ __Physical Changes: Boys__ HOME **

__Pubic hair__** **__:__ Pubic hair generally appears shortly after the start of the genitalia size increase. They are usually first visible at the base of the penis. The stages of Pube are :

1. The pubic hairs are visible at the base of the penis. 2. 6-12 months there are to many hairs to count. 3. The pubic hair densly fills the pubic triangle. 4. The Pubic hair spreads to the thighs and upwards to the naval.**

The usual places on the body that you may find body hair is in the under arm pits. The most common age for this is about 13-14 but some people will not recieve this untill as late as 17-18. another common place for hair to grow is in the facial area such as under the chin and bottom lip, above the top lip and down the sides of your cheeks. A male may also recive hair on the chest and back. You get hair on the upper chest and on the upper back. You will commonly recive hair from the belly button down to the genital area commonly know as a snail trail. All of this may commonly occur around the average age of 16-18.
 * __Body and facial hair:__

__Voice change:__ During puberty the male voice tends to get deeper as you go through the stages of puberty. This is** **because the longer and thicker vocal cords have a lower fundamental frequency. This most commonly occurs at ages 14-16.**

**__Male musculature and body shape:__ As males get closer to the end of puberty they get heavier bones and nearly twice as much muscle. Bone growth is very radicle in the jaw and shoulders as they start to grow and widened. this usually occurs during the later stages of puberty.**

__**Body odor and acne:**__
 * During puberty boys tend to get waves of acne as they get mature. These can result in 5-10 pimples on your face. Pimples can be caused by stress and also by not cleaning your skin two times a day. Body odor is the smell of sweat from boys when they get active. Body hair has a main effect on body odor because the hair causes you to sweat more.**