Before altering your diet, count how many calories you consume on a normal day. It is important that you count as close to the exact amount as possible so that you know how many to add.
2) Add Calories
Now that you know how many calories you eat on a daily basis, add 500 calories to that. This may seem like a lot, but if you space it out over 5 or 6 small meals it won't feel like that big of a change. Remember, a skinny person eats like a skinny person and a big person eats more calories.
3) Drinking Water
Drinking a large quantity of water is crucial to gaining weight. In order to have the necessary energy to keep healthy while gaining weight, it is important to drink lots of water. Even drinking a half gallon of water or more is recommended.
4) Weightlifting
Simply eating and doing no exercise will turn you from a skinny person to a fat person. It is important to exercise to stay healthy, in particular weightlifting. Weightlifting will help you turn the large calorie in-take into muscle. Depending on what your goal is will determine the amount of weightlifting you do. If you want to tone then lift a few days a week and do a lot of repetitions, but if you want to build muscle then lift five to six days a week and lift a lot of weight with lower amounts of repetitions.
5) Body Fat Percentage
Weighing yourself helps you keep track of where you are and where you want to go. Tracking your body fat percentage is crucial to make sure the weight you are gaining is turning from skinny to muscle more than fat.
6) Eat More
There will come a point when you will notice that you're not gaining weight anymore. If you haven't gained any weight in two weeks then it is time to add 250 more calories a day to your diet. Every time you notice you haven't gained weight for two weeks, add 250 calories a day to the diet.
7) Sleep
Getting 8 hours of sleep a night regularly is an important step that is often overlooked. Getting a good night of sleep helps you maintain energy.
There are several ways to gain weight, but these 7 if followed correctly and all together will help turn you from a skinny person into what you're looking for. You will not go from skinny to big in a week or two, it will take time. It is important to not get discouraged and give it time to develop.
