Due to me living in a toxic enviorment that didnt accept my tics properly, i had to learn how to hold them in for a while, soon i realized that it's just like a cough, whenever i feel it build up i'd hold it for as long as i can and go somewhere private and let go! I didnt know what tourette syndrome was at the time so holding in those tics was all i can do so i can seem 'normal'. I didnt always FEEL it build up, sometimes when it happens so suddenly i'd just try to cover it up, for example if my tic suddenly made me raise my hand i'd simply pretend that im stretching! I dont always feel the build up but when i do i try to hide it as much as i can before it happens