"Signs of Aging I" joke

Signs of Aging
Everything hurts and what doesn't hurt, doesn't work.
You feel like the morning after, and you haven't been anywhere.
Your little black book contains only names ending in M.D.
You get winded playing chess.
You're still chasing women but can't remember why.
You look forward to a dull evening.
Your favorite part of the newspaper is "25 Years Ago Today..."
You turn out the light for economic reasons rather than
romantic ones.
You sit in a rocking chair and can't get it going.
Your knees buckle, but your belt won't.
You regret all those mistakes resisting temptation.