I do this a lot as well. I have a bad habit of just freezing physically when I start to think. Since my work is conducted over video, my colleagues will often think I dropped off the call XD

Personally I find it a bad habit of mine, I have no idea how people gracefully take time to think. Whenever I do say something like “hold on, let me just think for a moment” my brain completely freezes and I get no thinking done.