New Study Suggests This is the Age You Reach Your Peak Popularity By Notable Life By Notable LifeView Author|April 11, 2016|Health + Wellness,View Health + Wellness Life,View Life TrendingView Trending If you can remember watching the Jays win the World Series, that's not saying much for your popularity. [ad_bb1] 'Cause as it turns out, at age 25, you're already starting to go downhill - which means those Mean Girls really did have something... View this article.