Hello AnxiousSara,
A very warm and caring welcome welcome to the forums...
I tried to do what you said you done, when you notice a rapid twitching....I felt a lot of pressure behind my eyes and ended up with a headache....I don’t think our face, teeth etc are supposed to be held in a tense position for any period of time....just my thoughts..
I think that because you are tensing your facial muscles, which is not really a very natural way....that it’s causing your twitching....I am not a Doctor, professional or have anything to do with medical advice at all...just tried it to see what happened...and these are only my thoughts..
I notice that when those weight lifers are lifting heavy weights...and their muscles are tensed to do so...they also twitch,...
To be 100% sure and to relax your mind...I strongly urge you to make an appointment with your Dr. and tell him/her what you’re experiencing when you do that....
Please know that we are here for you when you feel up to talking..
My kindest thoughts with my care dear AnxiousSara...
Grandy...