Various animal skins, such as chicken skin, duck skin, pig skin, chicken feet, chicken wings, duck wings, pig's trotters, elbows and pig's head meat, have high fat content. Chicken wings and duck wings are very lean except skin, so don't eat them during slimming. Skinned chicken breast is a good choice. 4. Nuts: peanuts, walnuts, pistachios, melon seeds, pine nuts and so on. Nuts are often nutritious food, but the disadvantage is that they are rich in oil and energy, so don't eat them during slimming. Normal people may be able to eat a small amount during slimming.