Gain weight

To gain weight you have to eat calories more than you burn , and your daily calories should be from more carbohydrate about 50% and 30% protein and 20% fat this is the fast healthy way to gain weight ,
and this website is gonna help you to count how many calories you need http://weightgaincalculator.com/
but in the website always tell you you need 30% fat ..no 20% its enough to gain weight and have a nice
muscle in the same time, and in gain weight diet you have to eat 4 or 5 time per day .
and here is an ex of how diet should be

The first meal : 4 eggs with a cup of milk and 200g oats and a banana

The second meal : about 200g chicken or turkey, meat, fish anything you want
with a 200 rice and a green salad and apple

The third meal : a medium dish of cooked vegetables and two medium potato and two bananas

The fourth meal : about a 200 g of different cheese whit a couple toast and cup of yogurt

The fifth meal : a steak of ( chicken, turkey, fish..no meat) cooked a healthy way
and a fruit salad with a yogurt

Note : take a supplement to complete your daily needs and always take a multivitamin