Feeling young could mean your brain is aging more slowly. While some people are young at heart, others feel older than their age -- and a recent study finds that this 'subjective age' may reflect brain aging. Researchers found that elderly people who feel younger than their age had a younger estimated brain age, compared with those who felt their age, or older than their age. The study is the first to find a link between brain aging and subjective age. Source 8y.
I am young and feel young. I've seen some around my age who act like they are old farts already and I'm like really? I think its your lifestyle. Don't sit around too much. Get up and out there!