Adolescence: Physical and Emotional Changes, Personal Hygiene and Stress Management (ICSE Class 8)
Updated 17 October 2026 · Fact-checked
Adolescence is the stage between childhood and adulthood, roughly 11 to 19 years, when hormones from the pituitary, testes and ovaries bring physical changes (growth spurt, voice change, menstruation) and emotional changes (mood swings). Hygiene matters because sweat and oil glands become active; stress can be managed by yoga, meditation, time management, sports, hobbies and rational thinking.
Notice that the pituitary controls the testes and ovaries, whose hormones cause the changes of adolescence, roughly ages 11 to 19.
Illustration drawn for QuestionBuddy.
Understand Adolescence: Changes, Personal Hygiene and Stress Management
Adolescence. The period between childhood and adulthood, roughly 11 to 19 years. Puberty is its beginning, when the body becomes able to reproduce. Timing varies from person to person; girls often start a year or two earlier than boys.
Hormones in control. The pituitary signals the testes to make testosterone (boys) and the ovaries to make oestrogen (girls).
Physical changes in both.
- Growth spurt in height and weight.
- Hair in the armpits and pubic region.
- More active sweat and oil glands: body odour, pimples (acne).
In boys. Voice box (larynx) grows, forming the Adam's apple; voice deepens; hair on face and chest; broader shoulders and stronger muscles; testes begin to make sperms.
In girls. Breasts develop; hips widen; menstruation begins as the ovaries start releasing eggs; voice becomes slightly higher.
Emotional and social changes. Mood swings; wish for independence; self-consciousness about looks; strong influence of friends (peer pressure); curiosity and new interests. These are normal.
Personal hygiene.
- Bathe daily; wear clean clothes and undergarments; wash the face; do not squeeze pimples.
- Girls change sanitary pads regularly during periods.
- Brush teeth twice a day; keep hair and nails clean.
- Eat a balanced diet with protein, iron and calcium; drink water; sleep 8 to 9 hours.
Stress. Mental or emotional pressure felt in a demanding situation (exams, peer pressure, arguments). A little can motivate; too much harms sleep, appetite, health and studies.
Ways to tackle stress.
| Method | How it helps |
|---|---|
| Yoga, meditation | calms the mind, slows breathing |
| Time management | plan work with breaks so it does not pile up |
| Sports, exercise | release tension, improve mood |
| Hobbies | music, art, reading, gardening |
| Rational thinking | view the problem calmly, break it into small steps |
Also talk to trusted adults. Avoid tobacco, alcohol or drugs: they are harmful, not coping.
Flow chart: hormonal trigger. Pituitary → testes (testosterone) in boys / ovaries (oestrogen) in girls → body changes of puberty.
Adolescence: Changes, Personal Hygiene and Stress Management: key facts
- Adolescence
- About 11 to 19 years
- Puberty: start
- Hormones from pituitary, testes, ovaries
- Varies between people
- Say roughly.
- Changes
Boys voice deepens, beard, Adam apple Girls breasts, menstruation, wider hips Both growth spurt, acne, hair growth - Name both physical and emotional.
- Stress management
- Yoga
- Meditation
- Time management
- Sports
- Hobbies
- Rational thinking
- Name specific methods.
How to answer Adolescence: Changes, Personal Hygiene and Stress Management questions
Questions ask for definitions, lists of changes in boys and girls, reasons for hygiene, or methods of coping with stress in a given situation.
- 1Define the term with the age range and say it varies.
- 2Split changes into boys, girls and both; add emotional changes.
- 3Give the reason for hygiene (active sweat and oil glands).
- 4For stress, match the method to the situation described (exam: time management; anxious: meditation).
- 5Mention harmful habits as things to avoid.
Adolescence: Changes, Personal Hygiene and Stress Management in real life
The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.
Exam worries
Suppose a Class 8 girl has three tests in one week and finds she cannot sleep, snaps at her family and forgets what she has learnt.
Name her problem and suggest three ways to manage it.
Try it first, then show the solutionSolution
- This is stress caused by pressure from the tests.
- Time management: make a study plan with short breaks.
- Yoga or meditation to calm the mind; some exercise and enough sleep.
Answer: Stress; time management, yoga or meditation, and sports or sleep help.
Memory hook: Plan, breathe, move.
Growth spurt
Suppose a boy who grew about 5 cm a year grows 9 cm in the year he turns 13 and is hungrier than before.
Why is his appetite higher and what should his diet include?
Try it first, then show the solutionSolution
- The growth spurt needs extra materials and energy.
- His diet should include protein, iron and calcium, with water.
- The extra growth is 9 - 5 = 4 cm more than usual in that year.
Answer: The growth spurt needs more nutrients; protein, iron and calcium; 4 cm extra growth.
Memory hook: Bigger growth needs bigger diet.
Tricks to remember Adolescence: Changes, Personal Hygiene and Stress Management
Short memory aids. Say each one aloud once, then use it on a question the same day.
T for boys, O for girls
Testes make Testosterone; Ovaries make Oestrogen.
Use it when: Hormones of puberty.
YTSHR
Yoga, Time, Sports, Hobbies, Rational thinking.
Use it when: Stress methods.
Sweat and oil
More active glands mean more washing.
Use it when: Reason for hygiene.
Adolescence: Changes, Personal Hygiene and Stress Management: solved examples
Ordered from board level to HOTS. Try each one before you open the solution.
Example 1: Hormones of puberty · 1 mark · MCQBoard level
Testosterone is made by the:
(a) ovaries (b) testes (c) thyroid (d) adrenals
Try it first, then show the solutionSolution
- The testes make testosterone, the male sex hormone.
Answer: (b).
Example 2: Define adolescence · 2 marks · Short answerBoard level
Define adolescence and state the approximate age range.
Try it first, then show the solutionSolution
- The stage of life between childhood and adulthood (1 mark).
- About 11 to 19 years (1 mark).
Answer: Stage between childhood and adulthood; roughly 11 to 19 years.
Example 3: Sort the changes · 3 marks · Short answerHarder board level
Sort these into changes in boys only, girls only, or both: Adam's apple, menstruation, acne, growth spurt, broad shoulders, widening of hips.
Try it first, then show the solutionSolution
- Boys only: Adam's apple, broad shoulders (1 mark).
- Girls only: menstruation, widening of hips (1 mark).
- Both: acne, growth spurt (1 mark).
Answer: Boys: Adam's apple, shoulders; girls: menstruation, hips; both: acne, growth spurt.
Example 4: Why hygiene · 3 marks · Short answerHarder board level
Explain why a teenager should bathe daily and avoid squeezing pimples. Give two further hygiene habits.
Try it first, then show the solutionSolution
- Sweat and oil glands are more active, causing odour and pimples, so daily washing keeps the skin clean (1 mark).
- Squeezing pimples spreads germs and leaves scars (1 mark).
- Brushing teeth twice a day; changing pads regularly in girls; wearing clean clothes (any two) (1 mark).
Answer: Active glands cause odour and acne; squeezing spreads infection; other habits as above.
Example 5: Exam stress plan · 4 marks · Case-basedHOTS / competency
Suppose Arun has five weeks to prepare for his exams, has 20 chapters to revise, and feels anxious and sleepless. (a) Calculate how many chapters per week he should revise if he plans to finish one week early. (b) Suggest three methods to reduce his stress. (c) Name one harmful way of coping he should avoid.
Try it first, then show the solutionSolution
- (a) 5 - 1 = 4 weeks of revision; 20 ÷ 4 = 5 chapters per week (1 mark).
- (b) Time management with a timetable (1 mark).
- Yoga or meditation, and sports or a hobby (1 mark).
- (c) Tobacco, alcohol or drugs (1 mark).
Answer: (a) 5 chapters per week. (b) Timetable, yoga or meditation, sports. (c) Tobacco, alcohol or drugs.
Where students lose marks in Adolescence: Changes, Personal Hygiene and Stress Management
The slips examiners see most often, and what to write instead.
Mistake: Saying adolescence is at the same age for all
Textbook age range is taken as exact.
Do this: Write roughly 11 to 19 years and that it varies.
Usually costs: 1 mark.
Mistake: Only physical changes listed
The question asks for physical and emotional changes.
Do this: Add mood swings, independence, peer pressure.
Usually costs: 1 mark.
Mistake: Vague stress management
Answers say study more or relax.
Do this: Name yoga, meditation, time management, sports, hobbies, rational thinking.
Usually costs: 1 mark.
Mistake: Giving no reason for hygiene
Habits are listed without the link to active glands.
Do this: Connect to sweat and oil glands.
Usually costs: 1 mark.
Exam tips
- Adolescence: about 11 to 19 years, varies.
- Testosterone from testes, oestrogen from ovaries.
- Always include emotional changes.
- Stress: name specific methods.
Practice questions on Adolescence: Changes, Personal Hygiene and Stress Management
Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.
Q1 · 1 mark · Very short answerBoard level
What is puberty?
Hint
Start of adolescence.
Answer
The stage at the beginning of adolescence when the body becomes capable of reproduction.
Q2 · 1 mark · Assertion-reasonHarder board level
Assertion (A): Two friends of the same age may start puberty a year or two apart.
Reason (R): The rise of the sex hormones begins at different times in different people.
(a) (A) is true and (R) is false.
(b) (A) is false and (R) is true.
(c) Both (A) and (R) are true, and (R) is the correct explanation of (A).
(d) Both (A) and (R) are true, but (R) is not the correct explanation of (A).Hint
Timing varies.
Answer
(c).
Q3 · 3 marks · Short answerHarder board level
Why does a teenager need extra protein, iron and calcium in the diet, and why does sleep of 8 to 9 hours matter during the growth spurt?
Hint
Growth needs materials.
Answer
During the growth spurt the body builds muscle and bone quickly: protein builds muscle, calcium strengthens bones, and iron helps blood carry more oxygen as the body enlarges. Sleep gives the body time to rest, grow and repair, and keeps the mind alert and calm.
Q4 · 4 marks · Long answerHarder board level
Explain any four emotional changes in adolescence and say why a teenager should discuss worries with trusted adults.
Hint
Moods, friends.
Answer
Mood swings, a wish for independence, self-consciousness about looks, peer pressure and curiosity are normal emotional changes. Talking to parents, teachers or trusted friends gives guidance and relief, and prevents wrong decisions or harmful habits.
Q5 · 3 marks · Case-basedHOTS / competency
Read and answer.
Suppose Meera, aged 13, finds that she feels shy about her pimples, keeps changing mood, and a friend offers her a cigarette to 'relax'.
(a) Name two reasons for her pimples and moods. (1)
(b) What should she say to her friend and why? (1)
(c) Name two healthy ways of relaxing. (1)Hint
Hormones, glands.
Answer
(a) Active oil glands and changing hormone levels. (b) Refuse, because tobacco harms health and does not reduce stress. (c) Yoga or meditation, sports, a hobby.
Test your recall
Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.
1.Which gland signals the testes and ovaries?Show answer
The pituitary.
2.What bulge grows in the throat of boys?Show answer
Adam's apple (larynx).
3.What begins in girls at puberty?Show answer
Menstruation.
4.Name one way to manage stress.Show answer
Yoga, meditation, time management, sports, hobbies or rational thinking.
5.How many hours of sleep does a teenager need?Show answer
About 8 to 9 hours.
Adolescence: Changes, Personal Hygiene and Stress Management: frequently asked questions
Is it normal to feel moody?
Yes, mood swings are a normal part of adolescence.
Does everyone get pimples?
Many do, because oil glands become more active; do not squeeze them.
Is stress always bad?
A little can motivate; too much harms health.
Where are the glands covered?
In the previous topic, glands and hormones.