It's not youth.
A part of this riddle is figuring out what you're supposed to figure out. The riddle is NOT a description of the answer, when you have figured out the riddle's secret (big hint there) and are finished with the riddle, THEN you can think about what the result was and it will lead you to the answer.

So: Do not try to find the answer in the riddle, in fact, forget about looking for the answer and try to figure out what's up with the riddle.