By Maggie Seaver and Sally Wadyka Ever find yourself staring into your closet, unable to recall why you’re there or what you needed in the first place? Or why do you sometimes jumble perfectly easy sentences or blank at a pivotal moment during a work meeting? You're young and relatively healthy, so what’s the deal? Brain blips can be unnerving, but they're completely normal. The good news is that they’re rarely the sign of a declining mind.