Same here, and the last time I used a firearm was in 7th grade agronomy class in North Dakota.

And by that, I mean we were taught to use rifles, not that I used a firearm ON my class.

Same here. Especially after spending 8h clicking mouse on not very ergonomic office table. I also notice a lot of people (especially younger males) have one shoulder a bit higher/lower than the other. I can only speculate it's for the same reason.

Earlier this year I swapped mouse hands to spread the workload out more evenly with my weaker arm, was a fun experiment with I think pretty good results.

I switched to ergonomic mouse[0] at home. It takes some time to get used to it, but I've never look backed after I did.

0. http://www.amazon.com/Wireless-Vertical-Ergonomic-Optical-16...

Likewise, and for as long as I remember. I've always just attributed it having my right arm under more conscious and thus less unconscious control.

My left arm also swings more and I attribute this to carrying a backpack for a long time on my right shoulder and holding the backpack with right hand.

So you have Parkinson's?

No, he's part of the KGB, obviously.

If he is trembling, then he has Parkinson's, if he walks left side first, then he's a KGB guy. Otherwise, he must be one of THEM.