I have tic in the muscle of my upper arm and it can be annoying when sitting . It starts up and I have to try moving into different positions to get rid of it and then back it comes. Has been going on like this for over a week and now think I will just have to live with it and hope it goes away eventually.
Almost certainly, no big deal and are exceedingly common as one gets older.....soon worry.
If after a few months of monitoring, they become a problem to you in whatever way, then seek medical advice.
There are certain conditions of the nervous system which could present with these symptoms,but exceedingly rare.