I've always heard about The Secret, but all I knew was it was just for those folks who believed they could stop smoking, cold turkey, if they finished the book. I don't smoke and so I never picked it up.
As Rugby said, it's harder to stay durable when you're in your mid-to-late 30's, but Manny's typically a guy who doesn't put his body to great duress. He's not the type who will go the extra mile all that often in the outfield and the basepaths. I think last year's nagging injuries put a downer to his usual reliability, health-wise, but seeing that he's more fit this Spring and coming off a very good postseason, Manny could return to form.