Students with big smiles had the longest lifespan, followed by those with partial smiles, and then by those with no smiles.
An examination by specialists at Wayne College in Michigan, America proved that being happy can extend your life span. They arrived at their decisions by examining 230 pictures of baseball players from the 1952 baseball enroll. Of the 184 players who had since passed away, those in the "no grin" area experienced a normal of 72.9 years while the "incomplete grin" bunch lived to around the age of 75.
Those with the most stretched out smiles experienced a normal of 79.9 years – an entire seven a greater number of years than their gloomy partners.