The Core work has really enriched my QT sessions. I find that the Core work is great at “steaming away” body inflammations—after I feel most of it has gone, I then switch to regular QT.
I often find that people give a body response such as “sighing” which I switch to Core work. Some people like the Core better, others regular QT better. The Core work has helped me refine my use of my breath.

Glad to hear it. The "pumping" action that you describe, ie going from yin to yang has a very nice effect as you have noticed. Enjoy!