Healthily gaining weight requires consuming a balanced diet with a calorie surplus while engaging in appropriate physical activity. Individuals aiming for weight gain should focus on nutrient-dense foods such as lean proteins, complex carbohydrates, and healthy fats. Including dairy products, nuts, seeds, and whole grains can help increase calorie intake. Strength training exercises promote muscle growth and contribute to healthy weight gain rather than fat accumulation. Eating frequent meals and incorporating high-calorie snacks like smoothies, peanut butter, and avocados can be beneficial. Staying consistent and patient is key, as rapid weight gain may lead to unhealthy fat accumulation. Adequate sleep and stress management further support weight gain efforts. Consulting a nutritionist or healthcare professional can help develop a personalized plan for safe and effective weight gain.