Except in unusual circumstances, it is probably not attainable except by those who have conditioned themselves through long application of meditation or by those who have practiced long and hard through use of the Hemi-Sync tapes for a period of months if not years.
And Iesus sayde vnto them: can the chyldren of a weddinge faste while the brydgrome is wt them. As longe as they have the brydgrome with them they cannot faste.Mark 2:19 TYN