5 Oats Eating a little oats before going to bed is also a good way to lose weight. Oats are also rich in dietary fiber, which can help absorb and excrete excess cholesterol and lose excess fat in the body. Oats are low in calories and suitable for weight loss. Eat it. However, it should also be noted that oatmeal is not easy to digest, so it should be eaten half an hour to an hour before going to bed, not too late, so as not to increase the burden on the stomach.