People who work in the public eye have long known this, which explains why “politicians, business people, pop stars, TV announcers, and public relations, marketing, and sales people smile ” so often, says Wprost.
ووجد الباحثون ايضا ان المزيد من الدم يصل الى دماغنا عندما نبتسم ،‏ وهذا ما يحسّن مزاجنا .‏