How gain 10-15kg in 6 month?

To gain 10-15 kg in six months, focus on a calorie surplus by consuming more calories than you burn. Prioritize nutrient-dense foods like lean proteins, whole grains, healthy fats, and plenty of fruits and vegetables. Incorporate strength training exercises to build muscle mass, which can help in healthy weight gain. Additionally, consider eating frequent meals and snacks throughout the day to increase your overall caloric intake.