Muscle Tension or “Buildup”?

Howdy!

I can get to a point where I feel a sort of swelling, or even numbness, with the Aneros, primarily when I focus on holding the contraction of my PC muscles (I kinda just let the anus do its own thing–maybe an adjustment here or there if I’m not feeling much). Is this a feeling I should be chasing? The reason I ask is because it isn’t very pleasurable, and I worry that what I’m feeling is simply muscle strain. Perhaps this “burning sensation” will become pleasurable as the rewiring process continues, or I should focus less on the sensation itself and more on arousal amplification? Has anyone else had a similar experience?

Thanks for your thoughts!