Aside from my mental weakness, one of the reasons I find writing for long periods so difficult (even with frequent breaks) is the physical discomfort I have to endure. My set up is, I imagine, pretty similar to most who use a PC/WP to write. A high-backed office chair, a desk, and a monitor directly in front of me, set at roughly face-height. But my list of aches and irritations are long. My elbows soon start to sting, because of their resting on the desk while typing, and chair arms while thinking. I started using two cushions to rest my arms on, but it doesn't really help. My back begins to ache, as do the backs of my thighs where they hang over the chair seat. My shoulder become knotted. I tire of these aches and pains so quickly it results in me spending more time away from the desk trying to recover, than sat there typing. Anyone else suffer with a similar barrier?