David Wilcock, Daniel, & The Harvest

[anagogy]

You do not 'take' your 3d body into 4d. You manifest a 4d body.
Dual activated means able to work in 4d (in a 4d body) whilst still being incarnate in 3rd density physicality.
To do this the higher bodies must be activated.
There are several ways to do this, spiritual and technical.
These activations also in the form of accelerators are already available to us for use.
Once in a 4d body (air based) it is then possible to work outside of the constraints of linear timeflow.
This has been explained on this forum before.
If you are of 51% positive polarity you can teleport already into the higher octaves of 4th density, spend some 'time' there, then return to 3d to apply what you have learnt and infuse physicality with this wisdom.

I'm aware of the concept as portrayed in the Ra material (dual body activation and what not). It's just not the only body of material that I go off of or deem reliable. Truth is like a mosaic, and its best not to look for it all in one spot, in my opinion, though the Ra material is a fantastic and inspiring resource.

I was suggesting the possibility, based on a lot of research, of the metaphysical variety, that 3D material can transform into 4D material, and vice versa. I've just investigated material that suggests a plethora of possibilities. Consider it intellectual candy to contemplate.

You say we do not "take your 3d body into 4d". I've seen a lot of material (past life/between life regressions) that suggests that is a possibility (whether it is the norm or not). Again, I think its important to consider the question, "what is impossible?"

Nothing is impossible, just less plausible. Best regards.