Homemade recipes on how to gain weight if you have a fast metabolism?

The only way to gain weight is to take in more calories than you burn. If you are very active and you have a small appetite you will need to eat very calorie dense foods. These might not be the most healthy foods in the long run. Foods with lots of sugar and fat are calorie dense. Liquid supplements with lots of calories might help also. Eat small amounts all day long. Munch on things like peanuts and cashews. Eat foods with cheese and butter on them. Meats with fat such as steak, sausages, bacon, etc. will have more calories than lean meats such as fish and chicken breast. If you exercise a lot, cut back a little so that you are not burning up everything that you eat. Ask a doctor why you can't gain weight. The doctor might want to check your thyroid gland or your blood sugar levels to see if there is a medical reason for your high metabolism. A doctor can also tell you if you are underweight or within a healthy range for your height and age. Another way to gain weight is to increase your muscle mass. This can be done with exercise and weight training. A trainer at a reputable gym can advise you about this.