YOU SAID:
Smile and you are going to feel better
INTO JAPANESE
笑顔で気分が良くなる
BACK INTO ENGLISH
Smile makes you feel better
INTO JAPANESE
笑顔で気分が良くなります
BACK INTO ENGLISH
A smile makes you feel better
INTO JAPANESE
笑顔で気分が良くなります
BACK INTO ENGLISH
A smile makes you feel better
That didn't even make that much sense in English.