Physical needs of kids include
Proper nutrition
Sound sleep
Physical activities
To fulfill physical needs of children
Inculcate healthy eating habits.
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Prefer quality over quantity.
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Feed your kids simple homemade food.
Be a sleep police.
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Set routine and follow through.
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Provide them opportunities for physical play . 
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⛹🏼Its very vital to their development and growth.
Give them body message in first 2 years and continue giving a head massage in later years. Let them massage your head too, if they show any interest(which they most likely do).
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Teach child to respect his body, because he has to live in it forever.
Amina Malik