| Description: Each time you have a net gain of 3,500 calories, you gain one pound! Because fat contains more than twice as many calories per gram as protein and carbohydrates, adding high-fat foods to your diet would be an efficient way to add calories!
More Info here about how you can gain more weight!
To gain more weight, make a tally of the calories you eat every day. Nutrition Data has this handy FOOD target Explorer to help you understand how to gain more weight.