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In Japan, many people 
 wear masks. Some people who no 
 wear them are having smiling 
. They have "forgotten" 
 to smile 
. This is because they wore a mask for 
 years. They want to relearn how to smile with 
. A "smile coach" from a "smile 
" company spoke about her work. She said masks made people smile less, so they developed a 
. She wants people to smile for their 
.