YOU SAID:

My muscles are achy and my temperament feels inconsistent.

INTO JAPANESE

私の筋肉が痛み、私の気質は一貫性のない感じています。

BACK INTO ENGLISH

My muscles are sore, my temperament is not consistent feel.

INTO JAPANESE

私の筋肉が痛い、私の気質は一貫性のある感じではありません。

BACK INTO ENGLISH

My muscles are sore, my temperament is not consistent feel.