Furthermore, recent brain research shows that just the act of smiling can actually make us happier. ________ But then, our smiles send a message back to the brain that makes us feel even happier.
AEndorphins not only make us feel better, but reduce pain as well.
BStudies show that smiling reduces stress and stress-related hormones.
CWe can even get the benefits of smiling just by making ourselves smile.
DIn other words, we smile because something happens that makes us happy.正確答案
答案與詳解
