Before the shift, my experiences were in "trying to stay present"... so as to maintain an existence there. The last many months prior to 12/21/12 I started to experience "issues" in switching and integrating the two. This goes on for awhile while we adjust on a whole new level. For me, that seems to have so totally switched "all of a sudden" (not really, just realizing it with new words to describe it.)
I can actually FEEL my energy depleted by trying to function in a linear reality. Ease and flow are the normal state and that occurs in a non-linear fashion. Thinking is a drain if it is not "in the moment" of exchange or an overall view of observing. (Linear sees past/future while non-linear sees from above, as an overall view of everything as it is connected).
Now, to not be present is a HUGE DRAIN ENERGETICALLY. It is a different kind of "pain", not in the previously traditional aspect, but from an energetic aspect. Pain for me now is when something "pulls or tugs or drains" my energy. It has gotten so sensitive, when I am present and another is not, when they keep going into past or future it creates a drain on the energy present in that exchange. So their physical energy is not the only issue anymore as it is their need to step out of current moment to exist. It affects my own existence... it is like interacting with those that function in a different (lower) dimension creates a hole in a spinning vortex where energy leaks out of that vortex.
Imagine present moment being a vortex. Spinning energy. Two people standing in the middle exchanging honest, PRESENT conversation. As soon as the other person steps out of that vortex to go into the past or future to another "time", a "hole" is created and the energy in that vortex starts to drain out into oblivion. That is how it FEELS .... and the only way I have of explaining it in this moment. :)
Those who choose to function in a linear capacity will continue to do so.... as long as they can hold out, energetically.... and the effort to stay more linear is going to be more draining .... this shift allows for ease in present moment, with less being required to function in those realms. The energy is lighter and vibrates at a totally different "speed" than we were used to before. Awareness in every moment for each of us is key. Sharing as we experience will help us all.