Anyone else's tics decrease when sick?

I've tried searching for this before but I thought I might just directly ask. When I'm sick my tics decrease to either very mild or none. It's actually usually a sign I'm getting better when they come back. I've been thinking it might be because my brain is busy with something else so it doesn't send the right signals to get messed up? Not sure just think it's interesting how they just poof out of existence sometimes when I get ill.