NFL's Akeem Ayers -- I'm Doubling Down When The Season Ends ... On In-N-Out!!

Seems there's a bright side to not making the playoffs ... Double Doubles ... 'cause Rams stud Akeem Ayers says he's gonna start his off-season conditioning at IN-N-OUT!!! Ayers was out at Mastro's grabbing a "light" bite when we asked him what…