This is great, thanks for the article and all these comments.
This is what I was trying to express recently to some of you/my friends, but here it's put really clearly.

What you are both saying here is exactly what I meant earlier by talking about "transpositioning energies" (like in music), or sometimes I named it as sacred alchemy, or a conscious harnessing of emotional energies. Or a "quantum leap" of emotions.
But good ol' pressure cooker and its pipes express all this far better ;-).

One little thought to add... what I also experienced some time ago in my life and recently as well, is that alongside with this "pressure cooker" effect there comes a continuous expansion (sometimes explosion :-P) followed by yet another contraction.
This is in fact a powerful, intensive pulsing... (with my doula background I quickly associate this with the movements of the womb at labour... sure enough, it is in essence a labouring of our own selves...)

So there are these periods of total openness (with no pressure whatsoever, on the contrary) when heart and all bodies are so huge and expanded that everything "fits" -- but then again, for all kinds of rhyme and reason (maybe this is what you call squeezing) contraction comes, finding yet another wave of pressure...

Surely, this ALWAYS happens, every single moment of our lives, so it is very much worth talking about it. But then there are these periods when real mastery is needed not to explode (especially not on others)...

Me personally find myself light years away from this mastery :-D
But I love the pulsing!! (which might be one way of mastering too...)

Just "huffing and puffing" here... :-)
Thanks anyway!
Réka