(as|) fit as a fiddle
1
used to refer to someone who is very healthy and in good physical condition
The idiom "fit as a fiddle" is believed to have originated in the 17th century. It is used to describe someone who is in excellent physical health and condition, often indicating a high level of fitness and well-being, just like a well-tuned musical instrument (a fiddle or violin) that produces the best sound when it is in perfect condition. This phrase is commonly used in a positive and complimentary manner.
- After months of training, John felt fit as a fiddle and ready to participate in the marathon.
- Despite his age, Mr. Johnson remained as fit as a fiddle by following a nutritious diet and engaging in daily exercise.