Laying down was a large part of fixing my RSI. On a bed, on my back, head propped on a pillow, knees at a 45 degree angle, bottom of laptop laying on hip bones.

Laying down was a large part of fixing my RSI. On a bed, on my back, head propped on a pillow, knees at a 45 degree angle, bottom of laptop laying on hip bones. This was my primary working position for a few years, and I didn't see any negatives.