If you suddenly began having trouble sleeping how might the pineal gland be involved

The pineal gland is in charge of producing melatonin which regulates your body's rhythms (including your circadian rhythm, a rhythm that tells your body if it is night or daytime). This would cause your body to think it is earlier than it actually is, keeping you awake.

Think it's rice because in many countries rice is the main food so it can be traditionally served all at once.

Answeraddiction; i know this to be true: )