This is the DVT awareness age! What about provision for exercise equipment for the relief or on rest crew- exercise bike, nordic trainer. If we're starting to talk really long range, it is the only way to prevent a lot of court action later. A major factor in Boeing discomfort is having the control between your legs, with inability to cross legs (not in itself a good thing, but comfort is important). IF you are having exercise equipment, is a small minimal flow fibre glass shower cubicle totally out of the question?