I block a lot a certain times and very little/none in some cases. However, I don’t allow myself to show it physically. I stutter (mental issue). I don’t want to add a physical tick to it. So, unfortunately, I just mumble “uh,uh,uh”, stop breathing, quit talking altogether, or use whatever avoidance tool works at the time (sometimes I simply walk away lol). I try for the life of me not to create a physical tick on top of my stutter.