[pdkl95]

Caps_Lock should be mapped to Control_L so you can type it in the home row with less stress to the hand/fingers. (no twisting)

Additionally, one of the better changes I made years ago was mapping redundant/useless modifiers to the bucky bits[1] in my ~/.Xmodmap.

    Phys Key | New Modifier Mapping
    -----------------------------------
    CapsLock | Control
    Alt_L    | Meta
    Alt_R    | Alt   (mod4)
    Win_L    | Super (mod3)
    Win_R    | Hyper (mod5)

To my surprise, quite a few programs support the higher modifier bits.

[1] http://www.catb.org/jargon/html/B/bucky-bits.html

[AnonymousPlanet]

Or you could use the edge of your left palm to hit CTRL. This reduces strain and is much faster.

It's the way I could use Emacs to write my thesis and only wonder about those stories of RSI. On Mac and Linux, I have CTRL-Number set to switch workspaces.