Children … smile as many as 400 times per day.

Ron Gutman, an entrepreneur and speaker, popularized this statistic in his TED talk on the benefits of smiling. In that talk he contrasts adult smiling frequency with that of children, citing research-based figures to argue that smiling is both more common in childhood and beneficial for health, social connection, and longevity. The “up to 400 times a day” line appears as part of a rapid sequence of comparative numbers meant to persuade a general audience that adults smile far less than they could, and that reclaiming a childlike propensity to smile may have measurable positive effects.

The claim functions less as a precise measurement than as a rhetorical contrast: children’s abundant smiling symbolizes openness, play, and unselfconscious social connection, while adults’ reduced smiling suggests inhibition and stress. Gutman uses the number to invite listeners to reconsider smiling as an active practice rather than a passive reaction—something that can be cultivated to improve mood, signal approachability, and strengthen interpersonal bonds. In this framing, the child’s smile becomes an implicit model for adult life: a reminder that emotional expression and social warmth can be habits with tangible personal and communal benefits.

1) “A child smiles 400 times a day.”
2) “Children smile as many as 400 times a day; adults smile only about 20 times a day.”
3) “The average child smiles 400 times per day.”