American scientists studied an old photo of a team of baseball players, and found that those who smiled in the shot did indeed live longer. The big smilers lived an average of 79.9 years. The partial smilers, 75 years, according to Colgate.
Smiling puts us in a good moodiStockphoto by Getty Images
There’s also evidence that forcing a smile can trick your brain into putting you in a better mood due to the chemical release of dopamine and serotonin.
Benefits the immune system
Even our immune system benefits from us smilingiStockphoto by Getty Images
As well as helping with our mood, smiling also benefits our immune system as the neurotransmitter dopamine in our brains increases the production of antibodies.
“What’s crazy is that just the physical act of smiling can make a difference in building your immunity,” Dr. Grossan an ENT-otolaryngologist in Los Angeles told NBC News.
“When you smile, the brain sees the muscle [activity] and assumes that humor is happening.”
Reduces blood pressure
Smiling sees a reduction in our blood pressureiStockphoto by Getty Images
Given that smiling reduces stress, it also helps to lower our blood pressure.
A smile or laughter causes an initial increase in heart rate, there is then a period of muscle relaxation followed by a reduction in our heart rate and blood pressure.
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