What is your nervous habit?

I am always moving my leg up and down, a constant and fast up-and-down movement of the leg, also known as "sewing machine legs". I know it's a nervous habit but many times I do it without even realizing it.

We've all been there one time or another, for me it's when I have to speak in front of the class. Actually just standing in from of the class makes me nervous. When I'm nervous my face gets itchy sometimes ( I hate that part, i think its because my pores are opening up too fast because I'm heating up from the nervousness or something). My voice wavers also so I might fail my oral assignment and I can't help but shuffle my feet or move around when I'm talking... I hate speaking in front of crowds...

Nervousness is something that rarely attacks me, but when it does, I successfully take control of it. The worst habit that I got when I get nervous and to control it is to sing songs. I do not sing them out loud, but imagine the beat and the lyrics and try to make a karaoke in my head. That way I feel relaxed. Although the max times when I get nervous is during exams and that's one time I cannot sit around singing songs.. Another bad habit is that I think a lot about the situation which is causing me nervousness, which sometimes helps me by finding a solution and sometimes worsens it by aggravating to it. I have never been criticised by my friends or anyone yet, because all these activities are mental and nobody even knows when I'm doing it. Although I sometimes let out a small snort or an angry retort when someone disturbs me. bourne

I hate when I'm nervous. Only once in my life that I have had sweat due to nervousness. I don't fidget, if I get nervous in class, I would take my pencil and tap the desk a few times. Also, my leg tends to move like the comment above mine that mentions "sewing machine legs". I also mumble and studder when I feel nervous.