As our vibration rises, it also expands. The expansion (which is the 5th Dimensional Being realized), is in a way conflicting with our 3rd Dimensional being, or our old paradigm limitation.
The limited thinking is that our bodies are what they are, in the way that what we see is reality. However, being made out of molecules that in Quantum Physics reality, move and can shift, now becoming multi-dimensional beings. Our bodies, both physical and ethereal (chakras, emotional, spiritual and astral), are expanding and making room for our expanded souls.
We can visualize our bodies expanding to make room for our expanded souls, without gaining weight. It is allowing space for our larger souls.