Have you tried drinking plain cold milk? Without sugar or chocolate?
If yes, you know it has a calming effect.
Alternatively, if we drink warm milk without sugar, it is kind of weird. We need to add sugar to make it a bit better.
That is how life is. When we are chilled out, we are sweet naturally. When we are hot or angry, we have to make efforts to get sweetness.
We decide, which milk to be.