Weight gain is something that isn't easy to do and you probably know this already. I know first hand because it is something I have to do every day. I am an ectomorph by genetics, which is the "skinny body type" and the one with the fast metabolism which makes gaining so hard for guys like me. The key to weight gain is to do everything BIG. You have to eat big, to lift big, to get big. Say that over and over again in your head until you fully understand it. A lot of people think weightlifting is the key to gaining weight, and I won't argue, it is an extremely important part. BUT, there is another thing that is just as important when it comes to how to gain weight, and that is your diet.

1) Count how many calories you eat in a normal day. Don't change anything, just eat like you normally would and count how many calories you consumed. This is an extremely important step, so try to be as exact as possible. Also, weight yourself.

2) Starting the day after you counted calories, eat 500 calories MORE then you normally do. So, lets pretend that the day you counted calories you counted 2000. For the rest of the week, you would now eat 2500 calories a day. Instead of eating 3 big meals a day or eating all day all the time, spread those calories out over 5-6 smaller meals. Eat one meal every 2 and a half to 3 hours. To get big, you have to eat big! Remember that.

3) Here's an important one. At some point, you will stop seeing weight gain. At this point, you will have to eat even more. So, when you stop gaining for at least 2 weeks, it means it is time to start eating an extra 250 calories a day. Every time you see you haven't gained weight for at least 2 weeks, add an extra 250 calories.

4) To weight gain you also used good health nutrition supplement to gain your weight even faster than eating many food but you can't over dose these supplements.

When people talk about medication-induced weight gain, you almost always hear about "diet and exercise", and usually not with much conviction. Face it, this is hard enough for people who don't have mood problems, let alone people who have cyclic phases of depression that include being extremely hopeless and unmotivated -- not at all conducive to sticking with either diet or exercise. However, the importance of this step should not be forgotten. Exercise clearly has antidepressant effects, for example, that along with all its other known health benefits make it a "no-brainer". Not that this is so obvious everybody does it, of course.

During your teen years, the number of calories you need varies with your particular body size, activity level, and rate of growth. For example, during growth spurts you will need more calories and will probably notice an increase in your appetite. On average, males 11 to 21 years old need between 2,500 and 3,000 calories a day, while females of the same ages need about 2,000 calories a day. You may need an additional 600 to 1,000 calories each day if you are involved in vigorous physical activity. However, it is not necessary to count calories. The important thing is to eat nutritious foods — even if you choose a vegetarian diet — from each of the food groups every day. Teens, just like adults, should follow a heart-healthy diet and watch how many high-fat foods they eat. No more than one-third of your total calories in a daily diet should be from fat. Limit cholesterol to 300 milligrams a day.