Is it possible for a 16 year old guy to grow 3 inches?

Answer:
Yes very possible during a growth spurt.

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sure , you can increase your height not only 3 inches but 6 inches. only thing you have to do is to do pull ups , strech exercise and yoga, daily for 2-3 yours morining evening and take very nourishing food. eggs, chicken fish, fruits, juices

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I am 15 and i am about 6' 3", not totally sure how i got there but its pretty cool, a lot of people are like why the hell are you so tall?

Well i dont know why but sooner or later you will just grow. Drink milk. Altho i hardly ever do, i drink green tea all the time. Take your usual vitamins and all that great stuff.

I can say i eat a lot and i dont seem to gain anything, altho alterin what you eat may help you too.

Dont know if this helps, good luck.

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I have a friend who is 15 and grew 7.5 inches over the summer of last year.

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both for your height and penis length...possible

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possible, but you need to have enough sleep and exercise.

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Yes it will grow until you are around 18. There are ways to make it grow more too

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