w złej kondycji fizycznej in inglese:

Tom is unfit for that job.

This fish is unfit to eat.

He is unfit to be a teacher.

They consider him unfit for that job.

The soil is too salty and unfit for growing crops

I don't want to be unfit because I 'm taking part in the marathon

She never gets any exercise - she must be really unfit.

Since he became unfit to rule.

I used to take plenty of exercise, but now I'm terribly unfit.

A businesswoman by day, Natasja leads a nightlife unfit for print.

Not that I dislike the job, but that I am unfit for it.

My brother wanted to join the army but because of a heart condition he was judged unfit to serve.