What does your spoon look like? It doesn't seem very uniform to use this as a weighing tool. Hehe, I am a student. I sit almost every day and don't exercise much. I cook about 200ml of cereal every day, but I don't feel hungry or uncomfortable. Cereal is mainly full fiber, you have to increase or decrease it according to your own situation. It is best to be 80% full. It was really hard at first, but it will get better after a long time.