[kndyry]

There are a few browser add-ons you might be interested in, for example Pentadactyl [0], or an entirely new browser like luakit [1], to return navigation control to the keyboard.

Another thing you might consider - and my personal preference - is switching your mouse for a trackball. I use the Logitech M570 [2] and find that I can be doing heavy UI work all day without fatigue. This is because your thumb drives the trackball, leaving the mouse body and your wrist stationary. In fact this mouse has been so great I've gotten everyone on my team using one as well.

Hope this helps.

[0] http://5digits.org/pentadactyl/

[1] https://mason-larobina.github.io/luakit/

[2] http://www.logitech.com/en-us/product/wireless-trackball-m57...