For this exact reason I closed all the other tabs, closed my phone and made my browser fullscreen. It went well, but about halfway I kept grabbing my phone just to force myself to put it away.
Removing the clutter is a good solution. I've been doing that for a while to make it easier to read, but I didn't think about it having the side effect of eliminating distractions.
I use viewtext (similar results to the parent's solution, but less customizations).