How can i get bigger/gain weight?

Gaining Weight: Eat healthy foods that are high in calories. Eat six meals per day. Work on strength training to build your large muscle groups. Work out with heavier weights with fewer repetitions. Sleep at least 8 to 9 hours per night. Hydrate well with water. Foods to help w healthy weight gain: almonds, cashews, pecans, sunflower seeds, flax seeds, walnuts, hummus, avocadoes, granola, trail mix, dried fruit.