Achieve healthy weight gain by eating nutrient-dense, calorie-rich foods like nuts, avocados, full-fat dairy, lean proteins, and whole grains—aim for a surplus of 500–1,000 calories daily to gain about 1–2 lb per week. Pair this with daily meals and snacks every 2–3 hours, include high-protein options and strength training, and drink smoothies or milkshakes to boost calories without f... xyz.com