Study: Smile Intensity In Photographs Predicts Longevity | Miller-McCune Online

Study: Smile Intensity In Photographs Predicts Longevity | Miller-McCune Online: "On average, the players with no smile lived for 72.9 years, a full two years less than those who exhibited partial smiles. Those with the largest grins reaped an even longer lifespan: Players with full smiles lived to 79.9 years, almost two years longer than the typical life expectancy for an American. That’s an overall difference of seven years of life between those players that chose not to smile and those who gave wholehearted grins."