Because you are reading or watching tennis. However, if you eyes are not following things and the movement is involuntary and causing you a problem it is important that you go and see a qualified medical practitioner (a doctor) about this.
Could you rephrase that please, but your eyelid is shaking because of a punctured nerve or something of the sort.
I don't have any punctured nerve. My eyelid shakes four five times a day may be not more than 5-10 seconds each time.
because they enjoy the feeling of shaking backward
the particles in a surface water move back- and- forth only.
To move quickly back and forth.
solids
solid
that means reflections
I like to move back and forth on black sock went i am wiggled
the particles in a surface water move back- and- forth only.
the particles in a surface water move back- and- forth only.
After you stroke a tuning fork, all the particles move back and forth. If you play a piano, particles of the wire move back and forth.
REM stands for Rapid Eye Movement so the answer is yes.
solids
it moves its body back and forth
solid
back and forth?
solid
solids
To move quickly back and forth.