Fit as a fiddle
Meaning
To be in good health: fit as being suited to a purpose.
Example
It’s time to face the music on your donut addiction.
Origin
The earliest recorded form of this phrase (1595) is as right as a fiddle perhaps because it was a piece of skilled craftsmanship and therefore to be admired, or because its playing required dexterity. It used to be said that a person who was well-liked had a face made of a fiddle meaning that it was always wreathed in smiles, as a fiddle has a much-curled shape.
