YOU SAID:

I’m down with the fitness.

INTO JAPANESE

私はフィットネスでダウンしています。

BACK INTO ENGLISH

I am down at fitness.

INTO JAPANESE

私は体調が悪い。

BACK INTO ENGLISH

I am in poor state of health.

INTO JAPANESE

私は体調が悪い。

BACK INTO ENGLISH

I am in poor state of health.