Do you have any tics you do when you're nervous about something?

When you’re anxious, stressed or nervous about something, and you start thinking about it too much…due payments, waiting for something important, like an answer, or a decision that really matters…when you’re at the doctor’s for something rather important…anything like that.

Are there tics, habits, something you find yourself doing, without knowing right away?
For example, I end up scratching my knuckles, or scratching on the bottom sides of my fingernails, and sometimes it starts bleeding. I only notice that after it starts hurting or if there’s blood.
What do you do? Anything?
The stress or worry can be anything; what is the associated habit?

Some are minor like mine, others are more serious…I’ve heard of some people who rip out their hair, one at a time. :/

Share yall, and hopefully you’re all having a stress free weekend. :)