Yes, except for the 3rd one, you can do these lying on your bed.. So it doesn't take any balancing.
If you are having "nerve" problems, chances are this is a "acupuncture" curable problem.
My brother when he was young, had an eye twitch.. Went for a session of acupuncture and cleared it up. That was 20 years ago; no reoccurance ever since..
You should definitely do the first exercise, it will improve your circulation by leaps and bounds.. Don't know if it will help the nerves, but I know good ciculation is essential for anything and everything...