How long would it take for a 15 y/o's biceps to grow 1 inch?

Question

if his biceps were already 12 inches?

Answer 1

It depends on how much training you have had already, if you have trained diligently for 3 months already, it may take you another 6 months at most to get the result. I had slightly bigger arms than yours when I was 15. I did push-ups, arm dips and chin-ups to get my arms up an inch just in 3 months. When you get bigger and bigger, it gets harder and harder to go further and grow faster, so you will see results very soon when you are skinny and first start out.

Please take your time to read the articles so that you won't overtrain plus you have to eat well and sleep well to make your dreams come true, good luck...

Add 1 Inch To Your Arms In 3 Workouts
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^_^ play hard life is short

Answer 2

depends...how long did it take you to get your biceps 12 inches?

Answer 3

depending on how much more body mass he can put on, roughly a month. i'm constantly working out and eating good and my body has yet to slow down. he's only 15 so he's got lots of time to grow.