I've had only a few dreams (in a lifetime) that were so much more lucid than reality that it is impossible to describe them.

In such a state:
Time itself seems completely frozen, yet you can still move and walk around.
The molecues, atoms; what makes up the energy of life in the air and environment around you seems to "sing" (hard to explain).
It seems to be like you are deep under the ocean, yet high on an open hill at the same time, but there is that sensation of moving through VERY LIGHT watery energy, sometimes even visible, much like looking at the ripples on a pond in very bright sunlight.