I become more calm on the outside and seem to become more eloquent and enunciate my words better. I also talk a lot more about the subject in a more scientific sense to distract myself.

When I'm socially uncomfortable or nervous I stay silent. Simple questions seem impossible to answer; I overthink how to respond, without actually responding.

Sweat mostly. I try to take my mind off things, and do something else in the meantime.

Jitter, fidget even more than I already am, tremble, and sometimes sweat

Do a line

A lot of fidgeting, looking away and rocking/swinging left to right in a chair.

Rock to the balls of my feet and then my heels. Twist my ring, twist my bracelet. Spin something (dice, ring, nearby object)