Walking briskly may lower risk of death in some adults: Study  ABC News - Breaking News, Latest News and VideosYou may not need 10,000 steps to get health benefits from walking  CNNHow Fast You Walk May Determine How Long You Live  Nautilus | ScienceIs Your Step Count Too Low? Try Walking Faster  Time MagazineWalking an extra 1,000 steps a day may help your heart, study finds  The Washington Post