 On average. Of those who say they feel older, 55% say it's because of body pain. 48% say it's because they get tired easily. 31% say it's because they feel less active overall. The poll surveyed 2,000 Americans split evenly by generation with a margin of error of plus or minus 2.2 percentage points. Nick Inelli, WTOP News. Sports at 25 and 55. Powered by Maximus. Moving people and technology forward.