who
studies the century-plus set at Boston University School of Medicine,
believes that assuming you've sidestepped genes for truly fatal diseases
like Huntington's, "there's nothing stopping you from living independently
well into your 90s." Heck, if your parents and grandparents were heavy
smokers, they might have died prematurely without ever reaching their true
potential lifespan, so go ahead and shoot for those triple digits. Follow
these 12 habits and check out Perls' lifetime risk