Идиома: fit as a fiddle

Примеры:

My grandmother is 94 years old, but she is as fit as a fiddle.
Моей бабушке 94 года, но она в отличной форме.

Paul seems to be as fit as a fiddle.
Пол здоров как бык.

We're going to get her fit as a fiddle.
Мы приведем ее в форму.