For example, you can eat a small apple or a banana or an orange or a kiwi fruit. Ordinary fruit won't get fat at night, but it's best not to eat avocado and durian, which are relatively high in calories. There are usually fresh vegetables, which won't make you fat at night, but you should also pay attention to the amount of these things. It is best not to put too much sauce or eat too much.
If you eat porridge at night, you will not get fat. But it is best not to cook porridge with rice. You can cook black rice porridge, purple potato porridge, millet porridge, pumpkin porridge, or tremella lotus seed porridge. You won't get fat if you eat it. However, a small bowl is enough. If you eat too much, you will gradually accumulate more calories.
And eating some coarse grains at night won't make you fat, such as eating a corn and soaking some sugar-free oats, but you can't eat too much of these, because you can't digest them if you eat too much.