Brief Answer:
Increased muscle mass, tightness, malnutrition can stunt growth.

Detailed Answer:
Hello dear, welcome to Ask a doctor's service.
I read your query and here is my advice.

The extreme muscle tightness, muscle imbalance and increased muscle mass can affect bone grouth in adolescents causing restriction on growing bones.
Increased muscle mass due to an exagerated physical training can restrict the growth of bones.
Malnutrition, poor health, parasites such helminthes and chronic diarrhea can stunt growth.

Hope I have answered the question.
Let me know if I can assist you further.

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Brief Answer:
Not only genetic, environment can determine the height.

Detailed Answer:
Hello dear and thank you for asking again.
Of course that current height is not genetic but environmental factors such nutrition, parasites, helmintes may affect the growth and excessive physical activity and muscle tightness can affect the growth and bone development.

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Brief Answer:
Lack of physical activity will not affect height.

Detailed Answer:
The lack of physical activity, if someone got a little to no physical activity, that will not affect much the height of a person. The lack of physical activity is not much likely to prevent bone growth in teens.

Let me know if I can assist you further

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