Why dont i gain any weight?

Why is it when I stuff my face full of food, and never gain weight?

u most likley have a very high metabolism .

lol I am the same way!! in a way I am thankful but it's probably because you have a fast metabolism I know I do and im a pretty active person so that also keeps me slim and all...

because you throw it up afterward. or you just really dont' eat as much as you think..

You do a lot of physical activity so the extra calories are never created into fat

I know a girl just like that, she eats so much but never gains any weight.
Personally what I think is that you are young now but when you get older all that weight will show.

it's totally normal for some people to be like that, even though most people aren''t
you just have a fast metabolism, and the calories fat from the most of the food you eat doesn't really turn into fat ...so really your one of the luckky ones : ]

        Simply a Rose to brighten your day,
        And maybe lessen the cares in your way;
        And also, too, to help you to know,
        That in knowing you, many others grow!

How to GAIN weight?

First, determine from the information below, what your weight should be. Then set yourself goals of a week, 2 weeks, a month, 3 months, 6 months and a year. As you see yourself meeting your goals it becomes easier.

BMI (Body Mass Index) is a measurement of body fat based on height and weight that applies to both men and women between the ages of 18 and 65 years.

BMI Classification

18.5 or less Underweight
18.5 to 24.99 Normal Weight
25 to 29.99 Overweight
30 to 34.99 Obesity (Class 1)
35 to 39.99 Obesity (Class 2)
40 or greater Morbid Obesity

Check out your BMI at the bmi calculator site below to see where you stand.

bmi calculator:

http://www.bmi-calculator.net/

If you need conversion info, 1 kg = 2.2 pounds and 2.54 cm = 1 inch (12 inches = 1 foot)

Info if you are trying to GAIN weight:

http://www.bmi-calculator.net/treatment/underweight-treatment.php

What should a minimum calorie intake be?

As a guide to minimum calorie intake, the American College of Sports Medicine (ACSM) recommends that calorie levels never drop below 1200 calories per day for women or 1800 calories per day for men. Even these calorie levels are quite low.

http://www.bmi-calculator.net/bmr-calculator/harris-benedict-equation/calorie-intake-to-lose-weight.php

Normal Adult Height-Weight Range Table

http://www.recipehound.com/weight.html

Average Teenager Weight

http://lifestyle.iloveindia.com/lounge/average-teenager-weight-236.html

Check out this link for exercise information:

http://www.fitstep.com/Library/Exercises/Exercises.htm

Well I don't know, but I am the same way...
I'm 15 and I way 89 pounds...
But I eat like a pig...LITERALLY...
If you ever find out why please let me know!

Haha I have this problem.. only disadvantage.. I'm 15 and I'm flat chested.. Lol