I first met Bruce in 1992, as a 17 year old, I had all sorts of fantasies about becoming strong and learning to defend myself. Bruce taught me that through hard work and daily practice a world of incredible depth and peace can be found within the art of Ba Gua Zhang that goes far beyond the ability to knock out King Kong.
Is that thinking of bringing energy from outside into your body as well, or just taking what you have and making it evenly fill out? What is the leading edge?
I've played around with thinking of my tension going inwards towards the bone while also thinking of my energy expanding out towards the periphery. I think that could be similar to what you describe as it feels like when I expand outwards things fill out in my body more evenly.
I will play around with the sponge thing and report back what I find.