I gave this a try last night and got strange results. In the dream, I sat down cross legged and cradled my hands, just as I would in F1. There was a fireplace directly in front of me which became my object of meditation. Almost the instant that I started concentrating, I zoomed up to within a few inches of the fireplace, then snapped back to my original position, at which point I began to rapidly pitch and yaw. :pale:
In an attempt to stop the roller coaster ride, I switched my concentration to the breath -- my physical breath. This resulted in a weird but short lived overlay of tactile sensations from F1 and F2 as the dream ended.
Could the loss of equilibrium have been a confusion of F1 (laying down on my side) and F2 (sitting upright)?