YOU SAID:

My brain says I should sleep.

INTO JAPANESE

私の脳は私が眠るべきだと言います。

BACK INTO ENGLISH

My brain says that I should sleep.

INTO JAPANESE

私の脳は、寝るべきである言います。

BACK INTO ENGLISH

My brain is in sleep, says.

INTO JAPANESE

私の脳は睡眠中に、言います。

BACK INTO ENGLISH

My brain says, during sleep.

INTO JAPANESE

私の脳は、睡眠中に言います。

BACK INTO ENGLISH

My brain says that while you sleep.

INTO JAPANESE

私の脳は、睡眠中と言います。

BACK INTO ENGLISH

My brain says that while you sleep.