The fountain of youth with the youthful young musician is one meaning, and the fountain of youth with the youthful energy of the leader is another meaning.
To have children is a double living, the earthly fountain of youth, a continual fresh delight, a volcano as well as a fountain, and also a source of weariness beyond description.
Seeing the show is like a visit to the fountain of youth for parents and the children.
'Fountain of youth' is actually kind of ambiguous - does it mean a way to make everyone healthy and let them live indefinitely? Or are we talking about something that would reset you physically to the way you were in your youth, which for various reasons not all of us would be enthused about?
The fountain of youth is like the monkeys paw in the W. W. Jacobs story. It never ends well.
The heart is the real fountain of youth.
Bodybuilding is the closest we have to the fountain of youth.
Exercise is the fountain of youth, I believe.
The Fountain of Youth is in your mind.
The real fountain of youth is to have a dirty mind.
Forget the fountain of youth, pal of mine. You can live to be a thousand, and it won't matter. Mediocrities like you deserve immortality.
Nutritional excellence is the only real fountain of youth.
To find joy in work is to discover the fountain of youth.
The secret to the fountain of youth is to think youthful thoughts.
Writing for young readers is almost like dipping into a fountain of youth; for hours a day, I am a child again.
Possibility-thinking is the long sought-after fountain of youth.