People suffering from psychosomatic illness depression and anxiety states could (8) _____ from simply exercising their zygomatic (9) ____ which pull the corners of the mouth (10) ____ to form
People suffering from psychosomatic illness depression and anxiety states could (8) _____ from simply exercising their zygomatic (9) ____ which pull the corners of the mouth (10) ____ to form a smile, several times an hour.
A. muscles
B. nerves
C. veins
D. bones