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Class 7
Chapter 6 Class 7 - Adolescence: A Stage of Growth and Change (Curiosi

2.2 Change in Body Shape

Last updated at April 26, 2026 by

What is Change in Body Shape?

It is the development of different body proportions during adolescence .

Key Facts and Examples
  • Boys develop broader shoulders and wider chests .
IMG004

A teenage boy tries on a shirt that is tight across
his shoulders, showing a change in body shape during
adolescence.

Example: Boys notice their shirts becoming tight across shoulders
  • Girls develop wider region below the waist .
IMG010

A teenage boy notices his shirt is tight across the
shoulders, indicating changes in body shape during
adolescence.

Example: Girls notice changes in hip measurements
  • Muscles grow more prominently in boys.
Example: Boys develop visible arm and chest muscles
  • Both sexes develop wider hips and shoulders .
Example: Adolescents need larger clothing sizes
Body Shape Changes Body Changes Boys Girls Shoulders Become broader Moderate broadening Chest Becomes wider Breast development Waist Remains narrow Becomes wider below Muscles Grow prominently Develop moderately
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