Enough with the crochety crap from the "old" thread.
I may be 39, but I believe that young is a state of mind.
I'm still young because:
I still fit in the jeans I wore in HS. ( I saved a pair)
I date woman in their early to mid twenties.
I run several races a year (up to several half marthons a year), with minor or NO injuries.
I do not take ANY prescribed or over the counter medication. Zero, zip, nada. Not even to treat racing injuries.
I still listen to modern music, mostly alternative and alternative country; but it still fresh.
When I smile at younger ladies, they smile back!
I'm still participating in extreme sports, and I'm not afraid of the occasional injury.