What food shall i take for gaining weight i am too thin and weak?

Weight and height: How tall are you and how much do you weigh? If you are otherwise healthy, being skinny is okay. Have a mixed diet rich in fresh vegetables, fruits, nuts, whole grains, beans, legumes, lentils, low fat milk products; curtail intake of saturated fats; no tobacco; no more than one drink a day and exercise at least 30 minutes/day.