YOU SAID:

I'm tired and am going to hit the sack.

INTO JAPANESE

私は疲れて、袋を打つつもりです。

BACK INTO ENGLISH

I am tired and I am going to hit a bag.

INTO JAPANESE

私は疲れていて、私は袋を打つつもりです。

BACK INTO ENGLISH

I am tired and I am going to hit a bag.