Three physical changes that happen to males during puberty are . . .

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Testosterone is the main hormone responsible for the changes in boys.

It's completely normal for you to experience puberty at any point between the ages of 8 and 14, and these are some of the changes you may notice.

1. Shoulders get wider

Your body is filling out and changing shape during puberty, so you’ll notice your shoulders become wider.

2. Muscles get bigger and stronger

Your muscle mass is also building during puberty, so you’ll notice your muscles grow and strength improve, particularly your upper body strength.

3. Voice starts to change

Your voice will ‘break’ as you go through puberty and will become permanently deeper.

During this process, you might find that your voice is very deep one minute and then goes very high the next. This is completely normal.

4. Penis and testicles get larger

Your penis and testicles will grow in size during puberty, and your scrotum will gradually become darker in colour.

5. You may start to get erections

This is when your penis goes hard and stiff – and can happen at any time.

6. Testicles start to produce sperm

Semen, which is made up of sperm and other bodily fluids, might be released when you have an erection.

This is called ejaculation. Once sperm is made and ejaculation happens, if you had sex without protection you could get someone pregnant.

7. You might have 'wet dreams'

This is when you ejaculate and release semen in your sleep. This is a completely normal part of puberty.

how to get help

If you have any more questions on this area or would like to speak to somebody about this topic, have a look at the links or search for your local services in the blue box below. Alternatively you can always contact your school nurse.

• w: Childline- Puberty for boys
  

Summary

• Puberty is a phase of rapid growth, at the end of which the body reaches reproductive maturity. Other body systems mature during this time too.
• Puberty is a time of rapid brain development and identity formation, with many emotional changes for both boys and girls.
• Adjusting to puberty can be difficult for both parents and young people.
• With good communication and support from family and friends most young people negotiate puberty effectively. 

This page has been produced in consultation with and approved by:

This page has been produced in consultation with and approved by:

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