I have weird muscular ticks or tremors that are sudden and then stop generally over and over again in the same muscles - either the bicept or the calf - at time

I have weird muscular ticks or tremors that are sudden and then stop generally over and over again in the same muscles - either the bicept or the calf - at times. I haven't figured out if it is related to stress or lack of sleep both of which I struggle with but I can say that it is pretty annoying. Sometimes I wonder if it is foreshadowing for something much less pleasant in the future.