Is it easy to gain weight by eating bananas + drinking plain milk at night?
Yes. You should eat a light diet at night to make it easier to digest. Since you'll be going to sleep soon after dinner, it's not easy to digest if you eat protein. Bananas are heavy in sugar, and fresh milk contains protein and fat. Apples and vegetables are good for weight loss. Cooking in plain water is the healthiest, with less salt, a few drops of oil and no MSG. Milk can be drunk warm before going to bed, but only a few sips.